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[PATCH v15 5/7] Preserve index dependencies on collation during pg_upgrade.
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* [PATCH v15 5/7] Preserve index dependencies on collation during pg_upgrade.
@ 2019-11-07 06:33  Julien Rouhaud <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Julien Rouhaud @ 2019-11-07 06:33 UTC (permalink / raw)

A new binary_upgrade_set_index_coll_version() SQL function is added to override
the recorded dependency version for collations.  pg_dump will call this
function to preserve the version information for all indexes, if run with the
--binary-upgrade option.

When pg_upgrade is used to upgrade from a version of PostgreSQL that didn't
support per-object versions, the version will be recorded as unknown.  If you
believe that the collation definitions haven't changed since indexes were last
built, you can use --collation-binary-compatible to tell pg_upgrade to assume
that the current versions are compatible with the existing indexes, and it will
pass --unknown-collations-binary-compatible through to pg_dump and mark them as
having the current version (according to the collation provider).

Author: Julien Rouhaud
Reviewed-by: Peter Eisentraut, Thomas Munro
Discussion: https://postgr.es/m/CAEepm%3D0uEQCpfq_%2BLYFBdArCe4Ot98t1aR4eYiYTe%3DyavQygiQ%40mail.gmail.com
---
 doc/src/sgml/ref/pgupgrade.sgml            |  18 ++
 src/backend/catalog/index.c                |  62 ++++++
 src/backend/utils/adt/pg_upgrade_support.c |  25 +++
 src/bin/pg_dump/Makefile                   |   2 +
 src/bin/pg_dump/pg_backup.h                |   1 +
 src/bin/pg_dump/pg_dump.c                  | 192 +++++++++++++++-
 src/bin/pg_dump/pg_dump.h                  |   3 +
 src/bin/pg_dump/t/002_pg_dump.pl           | 248 ++++++++++++++++-----
 src/bin/pg_upgrade/dump.c                  |   4 +-
 src/bin/pg_upgrade/option.c                |   7 +
 src/bin/pg_upgrade/pg_upgrade.h            |   2 +
 src/include/catalog/dependency.h           |   7 +
 src/include/catalog/index.h                |   3 +
 src/include/catalog/pg_proc.dat            |   4 +
 src/test/perl/PostgresNode.pm              |   6 +-
 15 files changed, 512 insertions(+), 72 deletions(-)

diff --git a/doc/src/sgml/ref/pgupgrade.sgml b/doc/src/sgml/ref/pgupgrade.sgml
index 6629d736b8..9794fc5234 100644
--- a/doc/src/sgml/ref/pgupgrade.sgml
+++ b/doc/src/sgml/ref/pgupgrade.sgml
@@ -212,6 +212,24 @@
       </listitem>
      </varlistentry>
 
+     <varlistentry>
+      <term><option>--collation-binary-compatible</option></term>
+      <listitem>
+       <para>
+        After upgrading from a release of <productname>PostgreSQL</productname>
+        older than 13, warnings may be reported when collation-dependent
+        indexes are first accessed.  This is because
+        <application>pg_upgrade</application> records the collation versions
+        as unknown, so <productname>PostgreSQL</productname> considers the
+        indexes to be potentially corrupted.  If you're certain that the
+        collation definitions used by your operating system or ICU haven't
+        changed since all indexes were created, you can use this flag
+        to mark all indexes as using the currently installed version.
+        Otherwise, see <xref linkend="sql-reindex"/>.
+       </para>
+      </listitem>
+     </varlistentry>
+
      <varlistentry>
       <term><option>-?</option></term>
       <term><option>--help</option></term>
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 369b5d43f1..68898636f5 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -3156,6 +3156,68 @@ index_build(Relation heapRelation,
 	SetUserIdAndSecContext(save_userid, save_sec_context);
 }
 
+static char *
+index_force_collation_version(const ObjectAddress *otherObject,
+							  const char *version,
+							  void *userdata)
+{
+	NewCollationVersionDependency *forced_dependency;
+
+	forced_dependency = (NewCollationVersionDependency *) userdata;
+
+	/* We only care about dependencies on collations. */
+	if (otherObject->classId != CollationRelationId)
+		return NULL;
+
+	/*
+	 * We only care about dependencies on a specific collation if a valid Oid
+	 * was given.=
+	 */
+	if (OidIsValid(forced_dependency->oid) &&
+			otherObject->objectId != forced_dependency->oid)
+		return NULL;
+
+	return forced_dependency->version;
+}
+
+/* index_force_collation_versions
+ *
+ * Override collation version dependencies for the given index.  If no
+ * collation identifier is specified, all dependent collation should be
+ * reset to an unknown version dependency, and no version should be provided
+ * either.
+ */
+void
+index_force_collation_versions(Oid indexid, Oid coll, char *version)
+{
+	Relation index;
+	ObjectAddress object;
+	NewCollationVersionDependency forced_dependency;
+
+	Assert(version);
+
+	index = relation_open(indexid, AccessExclusiveLock);
+
+	if (index->rd_rel->relkind != RELKIND_INDEX)
+		ereport(ERROR,
+				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
+				 (errmsg("\"%s\" is not an index", get_rel_name(indexid)))));
+
+	forced_dependency.oid = InvalidOid;
+	forced_dependency.version = version;
+
+	object.classId = RelationRelationId;
+	object.objectId = indexid;
+	object.objectSubId = 0;
+	visitDependentObjects(&object, &index_force_collation_version,
+						  &forced_dependency);
+
+	/* Invalidate the index relcache */
+	CacheInvalidateRelcache(index);
+
+	relation_close(index, NoLock);
+}
+
 /*
  * IndexCheckExclusion - verify that a new exclusion constraint is satisfied
  *
diff --git a/src/backend/utils/adt/pg_upgrade_support.c b/src/backend/utils/adt/pg_upgrade_support.c
index 18f2ee8226..66511b0a45 100644
--- a/src/backend/utils/adt/pg_upgrade_support.c
+++ b/src/backend/utils/adt/pg_upgrade_support.c
@@ -13,6 +13,7 @@
 
 #include "catalog/binary_upgrade.h"
 #include "catalog/heap.h"
+#include "catalog/index.h"
 #include "catalog/namespace.h"
 #include "catalog/pg_type.h"
 #include "commands/extension.h"
@@ -208,3 +209,27 @@ binary_upgrade_set_missing_value(PG_FUNCTION_ARGS)
 
 	PG_RETURN_VOID();
 }
+
+Datum
+binary_upgrade_set_index_coll_version(PG_FUNCTION_ARGS)
+{
+	Oid relid;
+	Oid coll;
+	char *version;
+
+	CHECK_IS_BINARY_UPGRADE;
+
+	relid = PG_GETARG_OID(0);
+
+	/* Detect if a collation is specified */
+	if (PG_ARGISNULL(1))
+		coll = InvalidOid;
+	else
+		coll = PG_GETARG_OID(1);
+
+	version = TextDatumGetCString(PG_GETARG_TEXT_PP(2));
+
+	index_force_collation_versions(relid, coll, version);
+
+	PG_RETURN_VOID();
+}
diff --git a/src/bin/pg_dump/Makefile b/src/bin/pg_dump/Makefile
index 2532d9183a..c58ebaa681 100644
--- a/src/bin/pg_dump/Makefile
+++ b/src/bin/pg_dump/Makefile
@@ -16,6 +16,8 @@ subdir = src/bin/pg_dump
 top_builddir = ../../..
 include $(top_builddir)/src/Makefile.global
 
+export with_icu
+
 override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
 LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
 
diff --git a/src/bin/pg_dump/pg_backup.h b/src/bin/pg_dump/pg_backup.h
index 8c0cedcd98..dc82b076ef 100644
--- a/src/bin/pg_dump/pg_backup.h
+++ b/src/bin/pg_dump/pg_backup.h
@@ -171,6 +171,7 @@ typedef struct _dumpOptions
 
 	int			sequence_data;	/* dump sequence data even in schema-only mode */
 	int			do_nothing;
+	int			unknown_coll_compat;
 } DumpOptions;
 
 /*
diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index ce31d16bd1..e3278369a2 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -46,6 +46,7 @@
 #include "catalog/pg_attribute_d.h"
 #include "catalog/pg_cast_d.h"
 #include "catalog/pg_class_d.h"
+#include "catalog/pg_collation_d.h"
 #include "catalog/pg_default_acl_d.h"
 #include "catalog/pg_largeobject_d.h"
 #include "catalog/pg_largeobject_metadata_d.h"
@@ -285,6 +286,8 @@ static void binary_upgrade_extension_member(PQExpBuffer upgrade_buffer,
 static const char *getAttrName(int attrnum, TableInfo *tblInfo);
 static const char *fmtCopyColumnList(const TableInfo *ti, PQExpBuffer buffer);
 static bool nonemptyReloptions(const char *reloptions);
+static void appendIndexCollationVersion(PQExpBuffer buffer, IndxInfo *indxinfo,
+										int enc, int unknown_coll_compat);
 static void appendReloptionsArrayAH(PQExpBuffer buffer, const char *reloptions,
 									const char *prefix, Archive *fout);
 static char *get_synchronized_snapshot(Archive *fout);
@@ -385,6 +388,7 @@ main(int argc, char **argv)
 		{"no-sync", no_argument, NULL, 7},
 		{"on-conflict-do-nothing", no_argument, &dopt.do_nothing, 1},
 		{"rows-per-insert", required_argument, NULL, 10},
+		{"unknown-collations-binary-compatible", no_argument, &dopt.unknown_coll_compat, 1},
 
 		{NULL, 0, NULL, 0}
 	};
@@ -704,6 +708,10 @@ main(int argc, char **argv)
 	if (archiveFormat != archDirectory && numWorkers > 1)
 		fatal("parallel backup only supported by the directory format");
 
+	/* Unknown collation versions can only be ignored in binary upgrade mode */
+	if (dopt.unknown_coll_compat && !dopt.binary_upgrade)
+		fatal("option --unknown-collations-binary-compatible only works in binary upgrade mode");
+
 	/* Open the output file */
 	fout = CreateArchive(filename, archiveFormat, compressLevel, dosync,
 						 archiveMode, setupDumpWorker);
@@ -6906,7 +6914,9 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 				i_tablespace,
 				i_indreloptions,
 				i_indstatcols,
-				i_indstatvals;
+				i_indstatvals,
+				i_inddependoids,
+				i_inddependversions;
 	int			ntups;
 
 	for (i = 0; i < numTables; i++)
@@ -6942,7 +6952,62 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 		 * is not.
 		 */
 		resetPQExpBuffer(query);
-		if (fout->remoteVersion >= 110000)
+		if (fout->remoteVersion >= 130000)
+		{
+			appendPQExpBuffer(query,
+							  "SELECT t.tableoid, t.oid, "
+							  "t.relname AS indexname, "
+							  "inh.inhparent AS parentidx, "
+							  "pg_catalog.pg_get_indexdef(i.indexrelid) AS indexdef, "
+							  "i.indnkeyatts AS indnkeyatts, "
+							  "i.indnatts AS indnatts, "
+							  "i.indkey, i.indisclustered, "
+							  "i.indisreplident, "
+							  "c.contype, c.conname, "
+							  "c.condeferrable, c.condeferred, "
+							  "c.tableoid AS contableoid, "
+							  "c.oid AS conoid, "
+							  "pg_catalog.pg_get_constraintdef(c.oid, false) AS condef, "
+							  "(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
+							  "t.reloptions AS indreloptions, "
+							  "(SELECT pg_catalog.array_agg(attnum ORDER BY attnum) "
+							  "  FROM pg_catalog.pg_attribute "
+							  "  WHERE attrelid = i.indexrelid AND "
+							  "    attstattarget >= 0) AS indstatcols,"
+							  "(SELECT pg_catalog.array_agg(attstattarget ORDER BY attnum) "
+							  "  FROM pg_catalog.pg_attribute "
+							  "  WHERE attrelid = i.indexrelid AND "
+							  "    attstattarget >= 0) AS indstatvals, "
+							  "(SELECT pg_catalog.array_agg(refobjid ORDER BY refobjid) "
+							  "  FROM pg_catalog.pg_depend "
+							  "  WHERE classid = " CppAsString2(RelationRelationId) " AND "
+							  "    objid = i.indexrelid AND "
+							  "    objsubid = 0 AND "
+							  "    refclassid = " CppAsString2(CollationRelationId) " AND "
+							  "    refobjversion IS NOT NULL) AS inddependoids, "
+							  "(SELECT pg_catalog.array_agg(quote_literal(refobjversion) ORDER BY refobjid) "
+							  "  FROM pg_catalog.pg_depend "
+							  "  WHERE classid = " CppAsString2(RelationRelationId) " AND "
+							  "    objid = i.indexrelid AND "
+							  "    objsubid = 0 AND "
+							  "    refclassid = " CppAsString2(CollationRelationId) " AND "
+							  "    refobjversion IS NOT NULL) AS inddependversions "
+							  "FROM pg_catalog.pg_index i "
+							  "JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
+							  "JOIN pg_catalog.pg_class t2 ON (t2.oid = i.indrelid) "
+							  "LEFT JOIN pg_catalog.pg_constraint c "
+							  "ON (i.indrelid = c.conrelid AND "
+							  "i.indexrelid = c.conindid AND "
+							  "c.contype IN ('p','u','x')) "
+							  "LEFT JOIN pg_catalog.pg_inherits inh "
+							  "ON (inh.inhrelid = indexrelid) "
+							  "WHERE i.indrelid = '%u'::pg_catalog.oid "
+							  "AND (i.indisvalid OR t2.relkind = 'p') "
+							  "AND i.indisready "
+							  "ORDER BY indexname",
+							  tbinfo->dobj.catId.oid);
+		}
+		else if (fout->remoteVersion >= 110000)
 		{
 			appendPQExpBuffer(query,
 							  "SELECT t.tableoid, t.oid, "
@@ -6967,7 +7032,9 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 							  "(SELECT pg_catalog.array_agg(attstattarget ORDER BY attnum) "
 							  "  FROM pg_catalog.pg_attribute "
 							  "  WHERE attrelid = i.indexrelid AND "
-							  "    attstattarget >= 0) AS indstatvals "
+							  "    attstattarget >= 0) AS indstatvals, "
+							  "' ' AS inddependoids, "
+							  "' ' AS inddependversions "
 							  "FROM pg_catalog.pg_index i "
 							  "JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
 							  "JOIN pg_catalog.pg_class t2 ON (t2.oid = i.indrelid) "
@@ -7006,7 +7073,9 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 							  "(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
 							  "t.reloptions AS indreloptions, "
 							  "'' AS indstatcols, "
-							  "'' AS indstatvals "
+							  "'' AS indstatvals, "
+							  "' ' AS inddependoids, "
+							  "' ' AS inddependversions "
 							  "FROM pg_catalog.pg_index i "
 							  "JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
 							  "LEFT JOIN pg_catalog.pg_constraint c "
@@ -7041,7 +7110,9 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 							  "(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
 							  "t.reloptions AS indreloptions, "
 							  "'' AS indstatcols, "
-							  "'' AS indstatvals "
+							  "'' AS indstatvals, "
+							  "' ' AS inddependoids, "
+							  "' ' AS inddependversions "
 							  "FROM pg_catalog.pg_index i "
 							  "JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
 							  "LEFT JOIN pg_catalog.pg_constraint c "
@@ -7072,7 +7143,9 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 							  "(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
 							  "t.reloptions AS indreloptions, "
 							  "'' AS indstatcols, "
-							  "'' AS indstatvals "
+							  "'' AS indstatvals, "
+							  "' ' AS inddependoids, "
+							  "' ' AS inddependversions "
 							  "FROM pg_catalog.pg_index i "
 							  "JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
 							  "LEFT JOIN pg_catalog.pg_depend d "
@@ -7106,7 +7179,9 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 							  "(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
 							  "null AS indreloptions, "
 							  "'' AS indstatcols, "
-							  "'' AS indstatvals "
+							  "'' AS indstatvals, "
+							  "' ' AS inddependoids, "
+							  "' ' AS inddependversions "
 							  "FROM pg_catalog.pg_index i "
 							  "JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
 							  "LEFT JOIN pg_catalog.pg_depend d "
@@ -7146,6 +7221,8 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 		i_indreloptions = PQfnumber(res, "indreloptions");
 		i_indstatcols = PQfnumber(res, "indstatcols");
 		i_indstatvals = PQfnumber(res, "indstatvals");
+		i_inddependoids = PQfnumber(res, "inddependoids");
+		i_inddependversions = PQfnumber(res, "inddependversions");
 
 		tbinfo->indexes = indxinfo =
 			(IndxInfo *) pg_malloc(ntups * sizeof(IndxInfo));
@@ -7171,6 +7248,8 @@ getIndexes(Archive *fout, TableInfo tblinfo[], int numTables)
 			indxinfo[j].indreloptions = pg_strdup(PQgetvalue(res, j, i_indreloptions));
 			indxinfo[j].indstatcols = pg_strdup(PQgetvalue(res, j, i_indstatcols));
 			indxinfo[j].indstatvals = pg_strdup(PQgetvalue(res, j, i_indstatvals));
+			indxinfo[j].inddependoids = pg_strdup(PQgetvalue(res, j, i_inddependoids));
+			indxinfo[j].inddependversions = pg_strdup(PQgetvalue(res, j, i_inddependversions));
 			indxinfo[j].indkeys = (Oid *) pg_malloc(indxinfo[j].indnattrs * sizeof(Oid));
 			parseOidArray(PQgetvalue(res, j, i_indkey),
 						  indxinfo[j].indkeys, indxinfo[j].indnattrs);
@@ -16455,10 +16534,11 @@ dumpIndex(Archive *fout, IndxInfo *indxinfo)
 
 	/*
 	 * If there's an associated constraint, don't dump the index per se, but
-	 * do dump any comment for it.  (This is safe because dependency ordering
-	 * will have ensured the constraint is emitted first.)	Note that the
-	 * emitted comment has to be shown as depending on the constraint, not the
-	 * index, in such cases.
+	 * do dump any comment, or in binary upgrade mode dependency on a collation
+	 * version for it.  (This is safe because dependency ordering will have
+	 * ensured the constraint is emitted first.)	Note that the emitted
+	 * comment has to be shown as depending on the constraint, not the index,
+	 * in such cases.
 	 */
 	if (!is_constraint)
 	{
@@ -16522,6 +16602,10 @@ dumpIndex(Archive *fout, IndxInfo *indxinfo)
 									"pg_catalog.pg_class",
 									"INDEX", qqindxname);
 
+		if (dopt->binary_upgrade)
+			appendIndexCollationVersion(q, indxinfo, fout->encoding,
+										dopt->unknown_coll_compat);
+
 		/* If the index defines identity, we need to record that. */
 		if (indxinfo->indisreplident)
 		{
@@ -16550,6 +16634,21 @@ dumpIndex(Archive *fout, IndxInfo *indxinfo)
 		if (indstatvalsarray)
 			free(indstatvalsarray);
 	}
+	else if (dopt->binary_upgrade)
+	{
+		appendIndexCollationVersion(q, indxinfo, fout->encoding,
+									dopt->unknown_coll_compat);
+
+		if (indxinfo->dobj.dump & DUMP_COMPONENT_DEFINITION)
+			ArchiveEntry(fout, indxinfo->dobj.catId, indxinfo->dobj.dumpId,
+						 ARCHIVE_OPTS(.tag = indxinfo->dobj.name,
+									  .namespace = tbinfo->dobj.namespace->dobj.name,
+									  .tablespace = indxinfo->tablespace,
+									  .owner = tbinfo->rolname,
+									  .description = "INDEX",
+									  .section = SECTION_POST_DATA,
+									  .createStmt = q->data));
+	}
 
 	/* Dump Index Comments */
 	if (indxinfo->dobj.dump & DUMP_COMPONENT_COMMENT)
@@ -18526,6 +18625,77 @@ nonemptyReloptions(const char *reloptions)
 	return (reloptions != NULL && strlen(reloptions) > 2);
 }
 
+/*
+ * Format inddependoids and inddependversions arrays and append it to the given
+ * buffer in the form of binary_upgrade_set_index_coll_version() calls.
+ */
+static void
+appendIndexCollationVersion(PQExpBuffer buffer, IndxInfo *indxinfo, int enc,
+							int unknown_coll_compat)
+{
+	char	   *inddependoids = indxinfo->inddependoids;
+	char	   *inddependversions = indxinfo->inddependversions;
+	char	  **inddependoidsarray = NULL;
+	char	  **inddependversionsarray = NULL;
+	int			ninddependoids;
+	int			ninddependversions;
+	int			i;
+
+	/*
+	 * for older versions that don't record the collation depndency, issue a
+	 * statement to mark the collation version as unknown
+	 */
+	if (strcmp(inddependoids, " ") == 0)
+	{
+		/*
+		 * do not issue UNKNOWN VERSION is caller specified that those are
+		 * compatible
+		 */
+		if (unknown_coll_compat)
+			return;
+
+		Assert(strcmp(inddependversions, " ") == 0);
+
+		appendPQExpBufferStr(buffer, "\n-- For binary upgrade, restore dependent collation version.\n");
+		appendPQExpBuffer(buffer, "SELECT "
+				"pg_catalog.binary_upgrade_set_index_coll_version(%d, NULL, '');",
+				indxinfo->dobj.catId.oid);
+		return;
+	}
+
+	parsePGArray(inddependoids, &inddependoidsarray, &ninddependoids);
+	parsePGArray(inddependversions, &inddependversionsarray, &ninddependversions);
+
+	Assert(ninddependoids == ninddependversions);
+
+	for (i = 0; i < ninddependoids; i++)
+	{
+		/*
+		 * If there was an unknown version dependency recorded for this
+		 * collation and the caller asked to mark those as depending ono
+		 * current version, don't emit a binary_upgrade_set_index_coll_version
+		 * function call.
+		 */
+		if ((strcmp(inddependversionsarray[i], "''")) == 0
+			&& unknown_coll_compat)
+		{
+			continue;
+		}
+
+		appendPQExpBufferStr(buffer, "\n-- For binary upgrade, restore dependent collation version.\n");
+		appendPQExpBuffer(buffer, "SELECT "
+				"pg_catalog.binary_upgrade_set_index_coll_version(%d, %s, %s);",
+				indxinfo->dobj.catId.oid,
+				inddependoidsarray[i],
+				inddependversionsarray[i]);
+	}
+
+	if (inddependoidsarray)
+		free(inddependoidsarray);
+	if (inddependversionsarray)
+		free(inddependversionsarray);
+}
+
 /*
  * Format a reloptions array and append it to the given buffer.
  *
diff --git a/src/bin/pg_dump/pg_dump.h b/src/bin/pg_dump/pg_dump.h
index e0c6444ef6..e3369451a7 100644
--- a/src/bin/pg_dump/pg_dump.h
+++ b/src/bin/pg_dump/pg_dump.h
@@ -365,6 +365,9 @@ typedef struct _indxInfo
 	int			indnattrs;		/* total number of index attributes */
 	Oid		   *indkeys;		/* In spite of the name 'indkeys' this field
 								 * contains both key and nonkey attributes */
+	char	   *inddependoids;	/* oids of collation this index depends on */
+	char	   *inddependversions;	/* version of collation this index depends
+									 * on */
 	bool		indisclustered;
 	bool		indisreplident;
 	Oid			parentidx;		/* if partitioned, parent index OID */
diff --git a/src/bin/pg_dump/t/002_pg_dump.pl b/src/bin/pg_dump/t/002_pg_dump.pl
index 1b90cbd9b5..74c457f1e5 100644
--- a/src/bin/pg_dump/t/002_pg_dump.pl
+++ b/src/bin/pg_dump/t/002_pg_dump.pl
@@ -53,6 +53,24 @@ my %pgdump_runs = (
 			"$tempdir/binary_upgrade.dump",
 		],
 	},
+	binary_coll_compatible => {
+		dump_cmd => [
+			'pg_dump',
+			'--no-sync',
+			'--format=custom',
+			"--file=$tempdir/binary_coll_compatible.dump",
+			'-w',
+			'--schema-only',
+			'--binary-upgrade',
+			'--unknown-collations-binary-compatible',
+			'-d', 'postgres',    # alternative way to specify database
+		],
+		restore_cmd => [
+			'pg_restore', '-Fc', '--verbose',
+			"--file=$tempdir/binary_coll_compatible.sql",
+			"$tempdir/binary_coll_compatible.dump",
+		],
+	},
 	clean => {
 		dump_cmd => [
 			'pg_dump',
@@ -387,6 +405,7 @@ my %dump_test_schema_runs = (
 # are flags used to exclude specific items (ACLs, blobs, etc).
 my %full_runs = (
 	binary_upgrade           => 1,
+	binary_coll_compatible   => 1,
 	clean                    => 1,
 	clean_if_exists          => 1,
 	createdb                 => 1,
@@ -916,9 +935,10 @@ my %tests = (
 			test_schema_plus_blobs => 1,
 		},
 		unlike => {
-			binary_upgrade => 1,
-			no_blobs       => 1,
-			schema_only    => 1,
+			binary_upgrade         => 1,
+			binary_coll_compatible => 1,
+			no_blobs               => 1,
+			schema_only            => 1,
 		},
 	},
 
@@ -1180,6 +1200,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			exclude_test_table       => 1,
 			exclude_test_table_data  => 1,
@@ -1205,6 +1226,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -1240,6 +1262,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -1262,6 +1285,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -1283,6 +1307,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -1304,6 +1329,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -1669,6 +1695,7 @@ my %tests = (
 		  { %full_runs, %dump_test_schema_runs, section_pre_data => 1, },
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 		},
 	},
@@ -1683,7 +1710,7 @@ my %tests = (
 			\n.*^
 			\QALTER TYPE dump_test.planets ADD VALUE 'mars';\E
 			\n/xms,
-		like => { binary_upgrade => 1, },
+		like => { binary_upgrade => 1, binary_coll_compatible => 1, },
 	},
 
 	'CREATE TYPE dump_test.textrange AS RANGE' => {
@@ -2351,6 +2378,7 @@ my %tests = (
 		  { %full_runs, %dump_test_schema_runs, section_pre_data => 1, },
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 		},
 	},
@@ -2544,6 +2572,7 @@ my %tests = (
 		},
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 		},
 	},
@@ -2611,6 +2640,7 @@ my %tests = (
 		/xm,
 		like => {
 			binary_upgrade          => 1,
+			binary_coll_compatible  => 1,
 			clean                   => 1,
 			clean_if_exists         => 1,
 			createdb                => 1,
@@ -2682,6 +2712,7 @@ my %tests = (
 		/xm,
 		like => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			clean                    => 1,
 			clean_if_exists          => 1,
 			createdb                 => 1,
@@ -3149,6 +3180,7 @@ my %tests = (
 		  { %full_runs, %dump_test_schema_runs, section_post_data => 1, },
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -3164,6 +3196,7 @@ my %tests = (
 		  { %full_runs, %dump_test_schema_runs, section_post_data => 1, },
 		unlike => {
 			binary_upgrade           => 1,
+			binary_coll_compatible   => 1,
 			exclude_dump_test_schema => 1,
 			schema_only              => 1,
 		},
@@ -3296,16 +3329,53 @@ my %tests = (
 			%full_runs, %dump_test_schema_runs, section_pre_data => 1,
 		},
 		unlike => { exclude_dump_test_schema => 1 },
+	},
+
+	"binary_upgrade_set_index_coll_version(oid, oid, 'not_a_version')" => {
+		create_order => 101,
+		create_sql => '
+		CREATE TABLE dump_test.regress_table_coll(id integer, val text);
+		CREATE INDEX regress_coll_idx1 ON dump_test.regress_table_coll(val COLLATE "fr-x-icu");
+		UPDATE pg_depend SET refobjversion = \'not_a_version\' WHERE refobjversion IS NOT NULL AND objid::regclass::text = \'dump_test.regress_coll_idx1\';',
+		regexp => qr/^
+		\QCREATE INDEX regress_coll_idx1 ON dump_test.regress_table_coll USING btree (val COLLATE "fr-x-icu");\E\n
+		\n
+		\Q-- For binary upgrade, restore dependent collation version.\E\n
+		\QSELECT pg_catalog.binary_upgrade_set_index_coll_version\E \(\d+,\ \d+,\ 'not_a_version'\);/xm,
+		like => { binary_upgrade => 1, binary_coll_compatible => 1, },
+		icu => 1,
+	},
+	"binary_upgrade_set_index_coll_version(?, ?, '')" => {
+		create_order => 102,
+		create_sql => '
+		CREATE TABLE dump_test.regress_table_coll_no_ver(id integer, val text);
+		CREATE INDEX regress_coll_no_ver_idx1 ON dump_test.regress_table_coll_no_ver(val COLLATE "fr-x-icu");
+		UPDATE pg_depend SET refobjversion = \'\' WHERE refobjversion IS NOT NULL AND objid::regclass::text = \'dump_test.regress_coll_no_ver_idx1\';',
+		regexp => qr/SELECT pg_catalog.binary_upgrade_set_index_coll_version\(\d+, \d+, ''\)/,
+		like => { binary_upgrade => 1},
+		# should not appear in binary_coll_compatible case!
+		unlike => { binary_coll_compatible => 1},
+		icu => 1,
 	});
 
 #########################################
 # Create a PG instance to test actually dumping from
 
-my $node = get_new_node('main');
-$node->init;
-$node->start;
+my $main_node = get_new_node('main');
+$main_node->init;
+$main_node->start;
+
+my $port = $main_node->port;
+
+# And another instance to validate the binary dump
+my $bin_node = get_new_node('binary');
+$bin_node->init;
+$bin_node->start;
 
-my $port = $node->port;
+my $bin_port = $bin_node->port;
+
+# and add a $node variable pointing to main_node for now
+my $node = $main_node;
 
 # We need to see if this system supports CREATE COLLATION or not
 # If it doesn't then we will skip all the COLLATION-related tests.
@@ -3329,6 +3399,10 @@ $node->psql('postgres', 'create database regress_pg_dump_test;');
 # command_fails_like is actually 2 tests)
 my $num_tests = 12;
 
+# 4 more tests for restoring globals and binary_upgrade dump, dumping it again
+# and regenerating the sql file
+$num_tests+= 4;
+
 foreach my $run (sort keys %pgdump_runs)
 {
 	my $test_key = $run;
@@ -3379,16 +3453,29 @@ foreach my $run (sort keys %pgdump_runs)
 			next;
 		}
 
+		# Skip any icu-related commands if there is no icu support
+		if ($ENV{with_icu} ne 'yes' && defined($tests{$test}->{icu}))
+		{
+			next;
+		}
+
 		# If there is a like entry, but no unlike entry, then we will test the like case
 		if ($tests{$test}->{like}->{$test_key}
 			&& !defined($tests{$test}->{unlike}->{$test_key}))
 		{
 			$num_tests++;
+
+			# binary_upgrade tests are also run after being restored and
+			# re-dumped.
+			$num_tests++ if ($test_key eq 'binary_upgrade');
 		}
 		else
 		{
 			# We will test everything that isn't a 'like'
 			$num_tests++;
+			# binary_upgrade tests are also run after being restored and
+			# re-dumped.
+			$num_tests++ if ($test_key eq 'binary_upgrade');
 		}
 	}
 }
@@ -3436,6 +3523,12 @@ foreach my $test (
 			next;
 		}
 
+		# Skip any icu-related commands if there is no icu support
+		if ($ENV{with_icu} ne 'yes' && defined($tests{$test}->{icu}))
+		{
+			next;
+		}
+
 		# Add terminating semicolon
 		$create_sql{$test_db} .= $tests{$test}->{create_sql} . ";";
 	}
@@ -3489,79 +3582,116 @@ command_fails_like(
 #########################################
 # Run all runs
 
-foreach my $run (sort keys %pgdump_runs)
+foreach my $pass (1, 2)
 {
-	my $test_key = $run;
-	my $run_db   = 'postgres';
-
-	$node->command_ok(\@{ $pgdump_runs{$run}->{dump_cmd} },
-		"$run: pg_dump runs");
-
-	if ($pgdump_runs{$run}->{restore_cmd})
+	foreach my $run (sort keys %pgdump_runs)
 	{
-		$node->command_ok(\@{ $pgdump_runs{$run}->{restore_cmd} },
-			"$run: pg_restore runs");
-	}
-
-	if ($pgdump_runs{$run}->{test_key})
-	{
-		$test_key = $pgdump_runs{$run}->{test_key};
-	}
-
-	my $output_file = slurp_file("$tempdir/${run}.sql");
+		my $test_key = $run;
+		my $run_db   = 'postgres';
 
-	#########################################
-	# Run all tests where this run is included
-	# as either a 'like' or 'unlike' test.
+		# we only test binary upgrade on the 2nd pass
+		next if ($pass == 2 and $test_key ne 'binary_upgrade');
 
-	foreach my $test (sort keys %tests)
-	{
-		my $test_db = 'postgres';
+		$node->command_ok(\@{ $pgdump_runs{$run}->{dump_cmd} },
+			"$run: pg_dump runs");
 
-		if (defined($pgdump_runs{$run}->{database}))
+		if ($pgdump_runs{$run}->{restore_cmd})
 		{
-			$run_db = $pgdump_runs{$run}->{database};
+			$node->command_ok(\@{ $pgdump_runs{$run}->{restore_cmd} },
+				"$run: pg_restore runs");
 		}
 
-		if (defined($tests{$test}->{database}))
+		if ($pgdump_runs{$run}->{test_key})
 		{
-			$test_db = $tests{$test}->{database};
+			$test_key = $pgdump_runs{$run}->{test_key};
 		}
 
-		# Skip any collation-related commands if there is no collation support
-		if (!$collation_support && defined($tests{$test}->{collation}))
-		{
-			next;
-		}
+		my $output_file = slurp_file("$tempdir/${run}.sql");
 
-		if ($run_db ne $test_db)
-		{
-			next;
-		}
+		#########################################
+		# Run all tests where this run is included
+		# as either a 'like' or 'unlike' test.
 
-		# Run the test listed as a like, unless it is specifically noted
-		# as an unlike (generally due to an explicit exclusion or similar).
-		if ($tests{$test}->{like}->{$test_key}
-			&& !defined($tests{$test}->{unlike}->{$test_key}))
+		foreach my $test (sort keys %tests)
 		{
-			if (!ok($output_file =~ $tests{$test}->{regexp},
-					"$run: should dump $test"))
+			my $test_db = 'postgres';
+
+			if (defined($pgdump_runs{$run}->{database}))
 			{
-				diag("Review $run results in $tempdir");
+				$run_db = $pgdump_runs{$run}->{database};
 			}
-		}
-		else
-		{
-			if (!ok($output_file !~ $tests{$test}->{regexp},
-					"$run: should not dump $test"))
+
+			if (defined($tests{$test}->{database}))
+			{
+				$test_db = $tests{$test}->{database};
+			}
+
+			# Skip any collation-related commands if there is no collation support
+			if (!$collation_support && defined($tests{$test}->{collation}))
+			{
+				next;
+			}
+
+			# Skip any icu-related commands if there is no icu support
+	        if ($ENV{with_icu} ne 'yes' && defined($tests{$test}->{icu}))
+			{
+				next;
+			}
+
+			if ($run_db ne $test_db)
+			{
+				next;
+			}
+
+			# Run the test listed as a like, unless it is specifically noted
+			# as an unlike (generally due to an explicit exclusion or similar).
+			if ($tests{$test}->{like}->{$test_key}
+				&& !defined($tests{$test}->{unlike}->{$test_key}))
 			{
-				diag("Review $run results in $tempdir");
+				if (!ok($output_file =~ $tests{$test}->{regexp},
+						"$run: should dump $test"))
+				{
+					diag("Review $run results in $tempdir");
+				}
+			}
+			else
+			{
+				if (!ok($output_file !~ $tests{$test}->{regexp},
+						"$run: should not dump $test"))
+				{
+					diag("Review $run results in $tempdir");
+				}
 			}
 		}
 	}
+
+	# After all dump have been generated, restore the binary_upgrade dump with
+	# the required global objects on a suitable node, and continue with the 2nd
+	# pass.
+	if ($pass == 1)
+	{
+		# Stop the original database instance as we don't need it anymore.
+		$node->stop('fast');
+
+		$bin_node->command_ok(\@{['psql',
+			"-d", "postgres", "-f", "$tempdir/pg_dumpall_globals.sql"]},
+			"Restore globals");
+
+		$bin_node->stop('fast');
+		$bin_node->start(binary_start => 1);
+		$bin_node->command_ok(\@{['pg_restore', '-p', $bin_port,
+			'-d', 'postgres',
+			"$tempdir/binary_upgrade.dump"]},
+			"Restore the binary_upgrade dump");
+		$bin_node->stop('fast');
+		$bin_node->start;
+
+		# And change $node to point to the freshly restored node.
+		$node = $bin_node;
+	}
 }
 
 #########################################
 # Stop the database instance, which will be removed at the end of the tests.
 
-$node->stop('fast');
+$bin_node->stop('fast');
diff --git a/src/bin/pg_upgrade/dump.c b/src/bin/pg_upgrade/dump.c
index 4d730adfe2..672ecda169 100644
--- a/src/bin/pg_upgrade/dump.c
+++ b/src/bin/pg_upgrade/dump.c
@@ -52,9 +52,11 @@ generate_old_dump(void)
 
 		parallel_exec_prog(log_file_name, NULL,
 						   "\"%s/pg_dump\" %s --schema-only --quote-all-identifiers "
-						   "--binary-upgrade --format=custom %s --file=\"%s\" %s",
+						   "--binary-upgrade --format=custom %s %s --file=\"%s\" %s",
 						   new_cluster.bindir, cluster_conn_opts(&old_cluster),
 						   log_opts.verbose ? "--verbose" : "",
+						   user_opts.coll_compat ?
+						   "--unknown-collations-binary-compatible" : "",
 						   sql_file_name, escaped_connstr.data);
 
 		termPQExpBuffer(&escaped_connstr);
diff --git a/src/bin/pg_upgrade/option.c b/src/bin/pg_upgrade/option.c
index 4ef2036ecd..be2d137376 100644
--- a/src/bin/pg_upgrade/option.c
+++ b/src/bin/pg_upgrade/option.c
@@ -56,6 +56,7 @@ parseCommandLine(int argc, char *argv[])
 		{"socketdir", required_argument, NULL, 's'},
 		{"verbose", no_argument, NULL, 'v'},
 		{"clone", no_argument, NULL, 1},
+		{"collation-binary-compatible", no_argument, NULL, 2},
 
 		{NULL, 0, NULL, 0}
 	};
@@ -203,6 +204,10 @@ parseCommandLine(int argc, char *argv[])
 				user_opts.transfer_mode = TRANSFER_MODE_CLONE;
 				break;
 
+			case 2:
+				user_opts.coll_compat = true;
+				break;
+
 			default:
 				fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
 						os_info.progname);
@@ -307,6 +312,8 @@ usage(void)
 	printf(_("  -v, --verbose                 enable verbose internal logging\n"));
 	printf(_("  -V, --version                 display version information, then exit\n"));
 	printf(_("  --clone                       clone instead of copying files to new cluster\n"));
+	printf(_("  --collation-binary-compatible mark collations as depending on current collation\n"
+			 "                                versions rather than unknown if they're unknown\n"));
 	printf(_("  -?, --help                    show this help, then exit\n"));
 	printf(_("\n"
 			 "Before running pg_upgrade you must:\n"
diff --git a/src/bin/pg_upgrade/pg_upgrade.h b/src/bin/pg_upgrade/pg_upgrade.h
index 8b90cefbe0..68e637ce8a 100644
--- a/src/bin/pg_upgrade/pg_upgrade.h
+++ b/src/bin/pg_upgrade/pg_upgrade.h
@@ -292,6 +292,8 @@ typedef struct
 	transferMode transfer_mode; /* copy files or link them? */
 	int			jobs;			/* number of processes/threads to use */
 	char	   *socketdir;		/* directory to use for Unix sockets */
+	bool		coll_compat;	/* should we skip marking index collations as
+								 * unknown version */
 } UserOpts;
 
 typedef struct
diff --git a/src/include/catalog/dependency.h b/src/include/catalog/dependency.h
index 8858ceb3df..5bbf59ea2f 100644
--- a/src/include/catalog/dependency.h
+++ b/src/include/catalog/dependency.h
@@ -130,6 +130,13 @@ typedef enum ObjectClass
 
 #define LAST_OCLASS		OCLASS_TRANSFORM
 
+/* Struct describing one forced collation version dependency */
+typedef struct NewCollationVersionDependency
+{
+	char	   *version;		/* forced collation version */
+	Oid			oid;			/* target collation oid */
+} NewCollationVersionDependency;
+
 /* flag bits for performDeletion/performMultipleDeletions: */
 #define PERFORM_DELETION_INTERNAL			0x0001	/* internal action */
 #define PERFORM_DELETION_CONCURRENTLY		0x0002	/* concurrent drop */
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index c619d02465..69d163f3cc 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -123,6 +123,9 @@ extern void FormIndexDatum(IndexInfo *indexInfo,
 
 extern void index_check_collation_versions(Oid relid);
 
+extern void index_force_collation_versions(Oid indexid, Oid coll,
+										   char *version);
+
 extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index c7c25e1eae..e403107946 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -10194,6 +10194,10 @@
   proname => 'binary_upgrade_set_missing_value', provolatile => 'v',
   proparallel => 'u', prorettype => 'void', proargtypes => 'oid text text',
   prosrc => 'binary_upgrade_set_missing_value' },
+{ oid => '8178', descr => 'for use by pg_upgrade',
+  proname => 'binary_upgrade_set_index_coll_version', provolatile => 'v',
+  proparallel => 'u', prorettype => 'void', proargtypes => 'oid oid text',
+  prosrc => 'binary_upgrade_set_index_coll_version' },
 
 # conversion functions
 { oid => '4302',
diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index 9575268bd7..bba07a2319 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -764,10 +764,14 @@ sub start
 		local %ENV = %ENV;
 		delete $ENV{PGAPPNAME};
 
+		my $options = "--cluster-name=$name";
+
+		$options .= ' -b' if ($params{binary_start});
+
 		# Note: We set the cluster_name here, not in postgresql.conf (in
 		# sub init) so that it does not get copied to standbys.
 		$ret = TestLib::system_log('pg_ctl', '-D', $self->data_dir, '-l',
-			$self->logfile, '-o', "--cluster-name=$name", 'start');
+			$self->logfile, '-o', $options, 'start');
 	}
 
 	if ($ret != 0)
-- 
2.20.1


--bp/iNruPH9dso1Pn
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment;
	filename="v15-0006-Add-ALTER-INDEX-.-ALTER-COLLATION-.-REFRESH-VERS.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12558+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12558+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12558+ messages in thread