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From: Marcin Barczyński <[email protected]>
To: pgsql-general <[email protected]>
Subject: How to troubleshoot: ERROR: cache lookup failed for type?
Date: Fri, 4 Oct 2024 14:09:19 +0200
Message-ID: <CAOhG4wehVGviLjMVFyn9oYE+faj_1tpcSXD6BKEBVzBTPQh40Q@mail.gmail.com> (raw)

Hello!

When reindexing a table, PostgreSQL returns the following errors for
two of its indexes:

Index foo_idx1 on foo failed with error: failed to find parent tuple
for heap-only tuple at (1162372,1) in table "foo"
Index foo_idx2 on foo failed with error: failed to find parent tuple
for heap-only tuple at (1162372,1) in table "foo"

When trying to show the tuple, there is another error message:

SET enable_indexscan = OFF;
SET enable_tidscan = OFF;
SELECT ctid, xmin, xmax, * FROM sf.dir_current_part_8 WHERE ctid =
'(1162372,1)';

ERROR:  cache lookup failed for type 1769235301

Searching for oid=1769235301 in pg_class, pg_type, pg_namespace and
pg_proc returned no results.

It appears to be data corruption.
It's PostgreSQL 13 and unfortunately, data_checksums are turned off.

I would appreciate any suggestions for troubleshooting this issue.

--
Marcin Barczyński

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