public inbox for [email protected]
help / color / mirror / Atom feed[PATCH v56 4/6] Doc part of shared-memory based stats collector.
4+ messages / 3 participants
[nested] [flat]
* [PATCH v56 4/6] Doc part of shared-memory based stats collector.
@ 2020-03-19 06:11 Kyotaro Horiguchi <[email protected]>
0 siblings, 0 replies; 4+ messages in thread
From: Kyotaro Horiguchi @ 2020-03-19 06:11 UTC (permalink / raw)
---
doc/src/sgml/catalogs.sgml | 6 +-
doc/src/sgml/config.sgml | 25 +++---
doc/src/sgml/high-availability.sgml | 13 +--
doc/src/sgml/monitoring.sgml | 127 +++++++++++++---------------
doc/src/sgml/ref/pg_dump.sgml | 9 +-
src/backend/postmaster/postmaster.c | 2 -
6 files changed, 85 insertions(+), 97 deletions(-)
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index b1de6d0674..0ef684d4d0 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -9261,9 +9261,9 @@ SCRAM-SHA-256$<replaceable><iteration count></replaceable>:<replaceable>&l
<para>
<xref linkend="view-table"/> lists the system views described here.
More detailed documentation of each view follows below.
- There are some additional views that provide access to the results of
- the statistics collector; they are described in <xref
- linkend="monitoring-stats-views-table"/>.
+ There are some additional views that provide access to the activity
+ statistics; they are described in
+ <xref linkend="monitoring-stats-views-table"/>.
</para>
<para>
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index a218d78bef..53d7dfda93 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -7375,11 +7375,11 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
<title>Run-time Statistics</title>
<sect2 id="runtime-config-statistics-collector">
- <title>Query and Index Statistics Collector</title>
+ <title>Query and Index Activity Statistics</title>
<para>
- These parameters control server-wide statistics collection features.
- When statistics collection is enabled, the data that is produced can be
+ These parameters control server-wide activity statistics features.
+ When activity statistics is enabled, the data that is produced can be
accessed via the <structname>pg_stat</structname> and
<structname>pg_statio</structname> family of system views.
Refer to <xref linkend="monitoring"/> for more information.
@@ -7395,14 +7395,13 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
</term>
<listitem>
<para>
- Enables the collection of information on the currently
- executing command of each session, along with the time when
- that command began execution. This parameter is on by
- default. Note that even when enabled, this information is not
- visible to all users, only to superusers and the user owning
- the session being reported on, so it should not represent a
- security risk.
- Only superusers can change this setting.
+ Enables activity tracking on the currently executing command of
+ each session, along with the time when that command began
+ execution. This parameter is on by default. Note that even when
+ enabled, this information is not visible to all users, only to
+ superusers and the user owning the session being reported on, so it
+ should not represent a security risk. Only superusers can change this
+ setting.
</para>
</listitem>
</varlistentry>
@@ -7433,9 +7432,9 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
</term>
<listitem>
<para>
- Enables collection of statistics on database activity.
+ Enables tracking of database activity.
This parameter is on by default, because the autovacuum
- daemon needs the collected information.
+ daemon needs the activity information.
Only superusers can change this setting.
</para>
</listitem>
diff --git a/doc/src/sgml/high-availability.sgml b/doc/src/sgml/high-availability.sgml
index f49f5c0108..45095857eb 100644
--- a/doc/src/sgml/high-availability.sgml
+++ b/doc/src/sgml/high-availability.sgml
@@ -2217,12 +2217,13 @@ HINT: You can then restart the server after making the necessary configuration
</para>
<para>
- The statistics collector is active during recovery. All scans, reads, blocks,
- index usage, etc., will be recorded normally on the standby. Replayed
- actions will not duplicate their effects on primary, so replaying an
- insert will not increment the Inserts column of pg_stat_user_tables.
- The stats file is deleted at the start of recovery, so stats from primary
- and standby will differ; this is considered a feature, not a bug.
+ The activity statistics is collected during recovery. All scans, reads,
+ blocks, index usage, etc., will be recorded normally on the
+ standby. Replayed actions will not duplicate their effects on primary, so
+ replaying an insert will not increment the Inserts column of
+ pg_stat_user_tables. The activity statistics is reset at the start of
+ recovery, so stats from primary and standby will differ; this is
+ considered a feature, not a bug.
</para>
<para>
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index db4b4e460c..90cf3072ac 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -22,7 +22,7 @@
<para>
Several tools are available for monitoring database activity and
analyzing performance. Most of this chapter is devoted to describing
- <productname>PostgreSQL</productname>'s statistics collector,
+ <productname>PostgreSQL</productname>'s activity statistics,
but one should not neglect regular Unix monitoring programs such as
<command>ps</command>, <command>top</command>, <command>iostat</command>, and <command>vmstat</command>.
Also, once one has identified a
@@ -53,7 +53,6 @@ postgres 15554 0.0 0.0 57536 1184 ? Ss 18:02 0:00 postgres: back
postgres 15555 0.0 0.0 57536 916 ? Ss 18:02 0:00 postgres: checkpointer
postgres 15556 0.0 0.0 57536 916 ? Ss 18:02 0:00 postgres: walwriter
postgres 15557 0.0 0.0 58504 2244 ? Ss 18:02 0:00 postgres: autovacuum launcher
-postgres 15558 0.0 0.0 17512 1068 ? Ss 18:02 0:00 postgres: stats collector
postgres 15582 0.0 0.0 58772 3080 ? Ss 18:04 0:00 postgres: joe runbug 127.0.0.1 idle
postgres 15606 0.0 0.0 58772 3052 ? Ss 18:07 0:00 postgres: tgl regression [local] SELECT waiting
postgres 15610 0.0 0.0 58772 3056 ? Ss 18:07 0:00 postgres: tgl regression [local] idle in transaction
@@ -65,9 +64,8 @@ postgres 15610 0.0 0.0 58772 3056 ? Ss 18:07 0:00 postgres: tgl
primary server process. The command arguments
shown for it are the same ones used when it was launched. The next five
processes are background worker processes automatically launched by the
- primary process. (The <quote>stats collector</quote> process will not be present
- if you have set the system not to start the statistics collector; likewise
- the <quote>autovacuum launcher</quote> process can be disabled.)
+ primary process. (The <quote>autovacuum launcher</quote> process will not
+ be present if you have set the system not to start it.)
Each of the remaining
processes is a server process handling one client connection. Each such
process sets its command line display in the form
@@ -130,20 +128,21 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
</sect1>
<sect1 id="monitoring-stats">
- <title>The Statistics Collector</title>
+ <title>The Activity Statistics</title>
<indexterm zone="monitoring-stats">
<primary>statistics</primary>
</indexterm>
<para>
- <productname>PostgreSQL</productname>'s <firstterm>statistics collector</firstterm>
- is a subsystem that supports collection and reporting of information about
- server activity. Presently, the collector can count accesses to tables
- and indexes in both disk-block and individual-row terms. It also tracks
- the total number of rows in each table, and information about vacuum and
- analyze actions for each table. It can also count calls to user-defined
- functions and the total time spent in each one.
+ <productname>PostgreSQL</productname>'s <firstterm>activity
+ statistics</firstterm> is a subsystem that supports tracking and reporting
+ of information about server activity. Presently, the activity statistics
+ tracks the count of accesses to tables and indexes in both disk-block and
+ individual-row terms. It also tracks the total number of rows in each
+ table, and information about vacuum and analyze actions for each table. It
+ can also track calls to user-defined functions and the total time spent in
+ each one.
</para>
<para>
@@ -151,15 +150,15 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
information about exactly what is going on in the system right now, such as
the exact command currently being executed by other server processes, and
which other connections exist in the system. This facility is independent
- of the collector process.
+ of the activity statistics.
</para>
<sect2 id="monitoring-stats-setup">
- <title>Statistics Collection Configuration</title>
+ <title>Activity Statistics Configuration</title>
<para>
- Since collection of statistics adds some overhead to query execution,
- the system can be configured to collect or not collect information.
+ Since tracking for the activity statistics adds some overhead to query
+ execution, the system can be configured to track or not track activity.
This is controlled by configuration parameters that are normally set in
<filename>postgresql.conf</filename>. (See <xref linkend="runtime-config"/> for
details about setting configuration parameters.)
@@ -172,7 +171,7 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<para>
The parameter <xref linkend="guc-track-counts"/> controls whether
- statistics are collected about table and index accesses.
+ to track activity about table and index accesses.
</para>
<para>
@@ -201,18 +200,11 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
</para>
<para>
- The statistics collector transmits the collected information to other
- <productname>PostgreSQL</productname> processes through temporary files.
- These files are stored in the directory named by the
- <xref linkend="guc-stats-temp-directory"/> parameter,
- <filename>pg_stat_tmp</filename> by default.
- For better performance, <varname>stats_temp_directory</varname> can be
- pointed at a RAM-based file system, decreasing physical I/O requirements.
- When the server shuts down cleanly, a permanent copy of the statistics
- data is stored in the <filename>pg_stat</filename> subdirectory, so that
- statistics can be retained across server restarts. When recovery is
- performed at server start (e.g., after immediate shutdown, server crash,
- and point-in-time recovery), all statistics counters are reset.
+ down cleanly, a permanent copy of the statistics data is stored in
+ the <filename>pg_stat</filename> subdirectory, so that statistics can be
+ retained across server restarts. When recovery is performed at server
+ start (e.g. after immediate shutdown, server crash, and point-in-time
+ recovery), all statistics counters are reset.
</para>
</sect2>
@@ -225,48 +217,46 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
linkend="monitoring-stats-dynamic-views-table"/>, are available to show
the current state of the system. There are also several other
views, listed in <xref
- linkend="monitoring-stats-views-table"/>, available to show the results
- of statistics collection. Alternatively, one can
- build custom views using the underlying statistics functions, as discussed
- in <xref linkend="monitoring-stats-functions"/>.
+ linkend="monitoring-stats-views-table"/>, available to show the activity
+ statistics. Alternatively, one can build custom views using the underlying
+ statistics functions, as discussed in
+ <xref linkend="monitoring-stats-functions"/>.
</para>
<para>
- When using the statistics to monitor collected data, it is important
- to realize that the information does not update instantaneously.
- Each individual server process transmits new statistical counts to
- the collector just before going idle; so a query or transaction still in
- progress does not affect the displayed totals. Also, the collector itself
- emits a new report at most once per <varname>PGSTAT_STAT_INTERVAL</varname>
- milliseconds (500 ms unless altered while building the server). So the
- displayed information lags behind actual activity. However, current-query
- information collected by <varname>track_activities</varname> is
- always up-to-date.
+ When using the activity statistics, it is important to realize that the
+ information does not update instantaneously. Each individual server writes
+ out new statistical counts just before going idle, not frequent than once
+ per <varname>PGSTAT_STAT_INTERVAL</varname> milliseconds (1 second unless
+ altered while building the server); so a query or transaction still in
+ progress does not affect the displayed totals. However, current-query
+ information tracked by <varname>track_activities</varname> is always
+ up-to-date.
</para>
<para>
Another important point is that when a server process is asked to display
- any of these statistics, it first fetches the most recent report emitted by
- the collector process and then continues to use this snapshot for all
- statistical views and functions until the end of its current transaction.
- So the statistics will show static information as long as you continue the
- current transaction. Similarly, information about the current queries of
- all sessions is collected when any such information is first requested
- within a transaction, and the same information will be displayed throughout
- the transaction.
- This is a feature, not a bug, because it allows you to perform several
- queries on the statistics and correlate the results without worrying that
- the numbers are changing underneath you. But if you want to see new
- results with each query, be sure to do the queries outside any transaction
- block. Alternatively, you can invoke
+ any of these statistics, it first reads the current statistics and then
+ continues to use this snapshot for all statistical views and functions
+ until the end of its current transaction. So the statistics will show
+ static information as long as you continue the current transaction.
+ Similarly, information about the current queries of all sessions is tracked
+ when any such information is first requested within a transaction, and the
+ same information will be displayed throughout the transaction. This is a
+ feature, not a bug, because it allows you to perform several queries on the
+ statistics and correlate the results without worrying that the numbers are
+ changing underneath you. But if you want to see new results with each
+ query, be sure to do the queries outside any transaction block.
+ Alternatively, you can invoke
<function>pg_stat_clear_snapshot</function>(), which will discard the
current transaction's statistics snapshot (if any). The next use of
statistical information will cause a new snapshot to be fetched.
</para>
-
+
<para>
- A transaction can also see its own statistics (as yet untransmitted to the
- collector) in the views <structname>pg_stat_xact_all_tables</structname>,
+ A transaction can also see its own statistics (as yet unwritten to the
+ server-wide activity statistics) in the
+ views <structname>pg_stat_xact_all_tables</structname>,
<structname>pg_stat_xact_sys_tables</structname>,
<structname>pg_stat_xact_user_tables</structname>, and
<structname>pg_stat_xact_user_functions</structname>. These numbers do not act as
@@ -648,7 +638,7 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
kernel's I/O cache, and might therefore still be fetched without
requiring a physical read. Users interested in obtaining more
detailed information on <productname>PostgreSQL</productname> I/O behavior are
- advised to use the <productname>PostgreSQL</productname> statistics collector
+ advised to use the <productname>PostgreSQL</productname> activity statistics
in combination with operating system utilities that allow insight
into the kernel's handling of I/O.
</para>
@@ -1086,10 +1076,6 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<entry><literal>LogicalLauncherMain</literal></entry>
<entry>Waiting in main loop of logical replication launcher process.</entry>
</row>
- <row>
- <entry><literal>PgStatMain</literal></entry>
- <entry>Waiting in main loop of statistics collector process.</entry>
- </row>
<row>
<entry><literal>RecoveryWalStream</literal></entry>
<entry>Waiting in main loop of startup process for WAL to arrive, during
@@ -1852,6 +1838,10 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
</thead>
<tbody>
+ <row>
+ <entry><literal>ActivityStatistics</literal></entry>
+ <entry>Waiting to write out activity statistics to shared memory.</entry>
+ </row>
<row>
<entry><literal>AddinShmemInit</literal></entry>
<entry>Waiting to manage an extension's space allocation in shared
@@ -6128,9 +6118,10 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid,
<entry><literal>performing final cleanup</literal></entry>
<entry>
<command>VACUUM</command> is performing final cleanup. During this phase,
- <command>VACUUM</command> will vacuum the free space map, update statistics
- in <literal>pg_class</literal>, and report statistics to the statistics
- collector. When this phase is completed, <command>VACUUM</command> will end.
+ <command>VACUUM</command> will vacuum the free space map, update
+ statistics in <literal>pg_class</literal>, and system-wide activity
+ statistics. When this phase is completed, <command>VACUUM</command>
+ will end.
</entry>
</row>
</tbody>
diff --git a/doc/src/sgml/ref/pg_dump.sgml b/doc/src/sgml/ref/pg_dump.sgml
index bcbb7a25fb..1fa59a2fdf 100644
--- a/doc/src/sgml/ref/pg_dump.sgml
+++ b/doc/src/sgml/ref/pg_dump.sgml
@@ -1280,11 +1280,10 @@ PostgreSQL documentation
</para>
<para>
- The database activity of <application>pg_dump</application> is
- normally collected by the statistics collector. If this is
- undesirable, you can set parameter <varname>track_counts</varname>
- to false via <envar>PGOPTIONS</envar> or the <literal>ALTER
- USER</literal> command.
+ The database activity of <application>pg_dump</application> is normally
+ collected. If this is undesirable, you can set
+ parameter <varname>track_counts</varname> to false
+ via <envar>PGOPTIONS</envar> or the <literal>ALTER USER</literal> command.
</para>
</refsect1>
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 5d5802f61d..b5a37b5e0c 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -6328,8 +6328,6 @@ restore_backend_variables(BackendParameters *param, Port *port)
if (postmaster_alive_fds[1] >= 0)
ReserveExternalFD();
#endif
- if (pgStatSock != PGINVALID_SOCKET)
- ReserveExternalFD();
}
--
2.27.0
----Next_Part(Tue_Mar_16_10_27_55_2021_500)--
Content-Type: Text/X-Patch; charset=us-ascii
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="v56-0005-Remove-the-GUC-stats_temp_directory.patch"
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: pg_recvlogical prints bogus error when interrupted
@ 2023-04-11 06:12 Michael Paquier <[email protected]>
0 siblings, 1 reply; 4+ messages in thread
From: Michael Paquier @ 2023-04-11 06:12 UTC (permalink / raw)
To: Bharath Rupireddy <[email protected]>; +Cc: Kyotaro Horiguchi <[email protected]>; [email protected]; pgsql-hackers
On Mon, Oct 24, 2022 at 08:15:11AM +0530, Bharath Rupireddy wrote:
> The attached patch (pg_recvlogical_graceful_interrupt.text) has a
> couple of problems, I believe. We're losing prepareToTerminate() with
> keepalive true and we're not skipping pg_log_error("unexpected
> termination of replication stream: %s" upon interrupt, after all we're
> here discussing how to avoid it.
>
> I came up with the attached v2 patch, please have a look.
This thread has slipped through the feature freeze deadline. Would
people be OK to do something now on HEAD? A backpatch is also in
order, IMO, as the current behavior looks confusing under SIGINT and
SIGTERM.
--
Michael
Attachments:
[application/pgp-signature] signature.asc (833B, ../../[email protected]/2-signature.asc)
download
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: pg_recvlogical prints bogus error when interrupted
@ 2023-04-27 05:54 Bharath Rupireddy <[email protected]>
parent: Michael Paquier <[email protected]>
0 siblings, 1 reply; 4+ messages in thread
From: Bharath Rupireddy @ 2023-04-27 05:54 UTC (permalink / raw)
To: Michael Paquier <[email protected]>; +Cc: Kyotaro Horiguchi <[email protected]>; [email protected]; pgsql-hackers
On Tue, Apr 11, 2023 at 11:42 AM Michael Paquier <[email protected]> wrote:
>
> On Mon, Oct 24, 2022 at 08:15:11AM +0530, Bharath Rupireddy wrote:
> > The attached patch (pg_recvlogical_graceful_interrupt.text) has a
> > couple of problems, I believe. We're losing prepareToTerminate() with
> > keepalive true and we're not skipping pg_log_error("unexpected
> > termination of replication stream: %s" upon interrupt, after all we're
> > here discussing how to avoid it.
> >
> > I came up with the attached v2 patch, please have a look.
>
> This thread has slipped through the feature freeze deadline. Would
> people be OK to do something now on HEAD? A backpatch is also in
> order, IMO, as the current behavior looks confusing under SIGINT and
> SIGTERM.
IMO, +1 for HEAD/PG16 and +0.5 for backpatching as it may not be so
critical to backpatch all the way down. What may happen without this
patch is that the output file isn't fsync-ed upon SIGINT/SIGTERM.
Well, is it a critical issue on production servers?
On Fri, Apr 7, 2023 at 5:12 AM Cary Huang <[email protected]> wrote:
>
> The following review has been posted through the commitfest application:
>
> The patch applies and tests fine. I like the way to have both ready_to_exit and time_to_abort variables to control the exit sequence. I think the (void) cast can be removed in front of PQputCopyEnd(), PQflush for consistency purposes as it does not give warnings and everywhere else does not have those casts.
Thanks for reviewing. I removed the (void) casts like elsewhere in the
code, however, I didn't change such casts in prepareToTerminate() to
not create a diff.
I'm attaching the v4 patch for further review.
--
Bharath Rupireddy
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
Attachments:
[application/x-patch] v4-0001-Fix-pg_recvlogical-error-message-upon-SIGINT-SIGT.patch (2.7K, ../../CALj2ACWgqdUiwEY7o85V9Meb21Qa+Y8qxPprT82-ok8WhXArUw@mail.gmail.com/2-v4-0001-Fix-pg_recvlogical-error-message-upon-SIGINT-SIGT.patch)
download | inline diff:
From 22195f136440fdadae0c6a0bf04c23fa16b4031c Mon Sep 17 00:00:00 2001
From: Bharath Rupireddy <[email protected]>
Date: Wed, 26 Apr 2023 15:25:03 +0000
Subject: [PATCH v4] Fix pg_recvlogical error message upon SIGINT/SIGTERM
When pg_recvlogical gets SIGINT/SIGTERM, it emits
"unexpected termination of replication stream" error, which is
meant for really unexpected termination or a crash, but not for
SIGINT/SIGTERM. Upon SIGINT/SIGTERM, we want pg_recvlogical to
fsync the output file before exiting cleanly. This commit changes
pg_recvlogical to that.
Reported-by: Andres Freund
Author: Bharath Rupireddy
Reviewed-by: Kyotaro Horiguchi, Andres Freund
Reviewed-by: Cary Huang
Discussion: https://www.postgresql.org/message-id/20221019213953.htdtzikf4f45ywil%40awork3.anarazel.de
---
src/bin/pg_basebackup/pg_recvlogical.c | 29 ++++++++++++++++++++++----
1 file changed, 25 insertions(+), 4 deletions(-)
diff --git a/src/bin/pg_basebackup/pg_recvlogical.c b/src/bin/pg_basebackup/pg_recvlogical.c
index f3c7937a1d..337076647b 100644
--- a/src/bin/pg_basebackup/pg_recvlogical.c
+++ b/src/bin/pg_basebackup/pg_recvlogical.c
@@ -54,7 +54,8 @@ static const char *plugin = "test_decoding";
/* Global State */
static int outfd = -1;
-static volatile sig_atomic_t time_to_abort = false;
+static bool time_to_abort = false;
+static volatile sig_atomic_t ready_to_exit = false;
static volatile sig_atomic_t output_reopen = false;
static bool output_isfile;
static TimestampTz output_last_fsync = -1;
@@ -283,6 +284,23 @@ StreamLogicalLog(void)
copybuf = NULL;
}
+ /* When we get SIGINT/SIGTERM, we exit */
+ if (ready_to_exit)
+ {
+ /*
+ * Try informing the server about our exit, but don't wait around
+ * or retry on failure.
+ */
+ PQputCopyEnd(conn, NULL);
+ PQflush(conn);
+ time_to_abort = true;
+
+ if (verbose)
+ pg_log_info("received interrupt signal, exiting");
+
+ break;
+ }
+
/*
* Potentially send a status message to the primary.
*/
@@ -614,7 +632,10 @@ StreamLogicalLog(void)
res = PQgetResult(conn);
}
- if (PQresultStatus(res) != PGRES_COMMAND_OK)
+
+ /* It is not unexepected termination error when Ctrl-C'ed. */
+ if (!ready_to_exit &&
+ PQresultStatus(res) != PGRES_COMMAND_OK)
{
pg_log_error("unexpected termination of replication stream: %s",
PQresultErrorMessage(res));
@@ -656,7 +677,7 @@ error:
static void
sigexit_handler(SIGNAL_ARGS)
{
- time_to_abort = true;
+ ready_to_exit = true;
}
/*
@@ -976,7 +997,7 @@ main(int argc, char **argv)
while (true)
{
StreamLogicalLog();
- if (time_to_abort)
+ if (ready_to_exit || time_to_abort)
{
/*
* We've been Ctrl-C'ed or reached an exit limit condition. That's
--
2.34.1
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: pg_recvlogical prints bogus error when interrupted
@ 2023-04-27 06:22 Michael Paquier <[email protected]>
parent: Bharath Rupireddy <[email protected]>
0 siblings, 0 replies; 4+ messages in thread
From: Michael Paquier @ 2023-04-27 06:22 UTC (permalink / raw)
To: Bharath Rupireddy <[email protected]>; +Cc: Kyotaro Horiguchi <[email protected]>; [email protected]; pgsql-hackers
On Thu, Apr 27, 2023 at 11:24:52AM +0530, Bharath Rupireddy wrote:
> IMO, +1 for HEAD/PG16 and +0.5 for backpatching as it may not be so
> critical to backpatch all the way down. What may happen without this
> patch is that the output file isn't fsync-ed upon SIGINT/SIGTERM.
> Well, is it a critical issue on production servers?
It is also true that it's been this way for years with basically
nobody complaining outside this thread. So there is also an argument
about leaving v16 out of the picture, and do that only in 17~ to avoid
playing with the branch stability more than necessary? I see 7 open
items as of today, and there are TAP tests linked to pg_recvlogical.
That should be OK, because none of these tests rely on specific
signals, but the buildfarm has some weird setups, as well..
--
Michael
Attachments:
[application/pgp-signature] signature.asc (833B, ../../[email protected]/2-signature.asc)
download
^ permalink raw reply [nested|flat] 4+ messages in thread
end of thread, other threads:[~2023-04-27 06:22 UTC | newest]
Thread overview: 4+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2020-03-19 06:11 [PATCH v56 4/6] Doc part of shared-memory based stats collector. Kyotaro Horiguchi <[email protected]>
2023-04-11 06:12 Re: pg_recvlogical prints bogus error when interrupted Michael Paquier <[email protected]>
2023-04-27 05:54 ` Re: pg_recvlogical prints bogus error when interrupted Bharath Rupireddy <[email protected]>
2023-04-27 06:22 ` Re: pg_recvlogical prints bogus error when interrupted Michael Paquier <[email protected]>
This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox