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When searching the local relation by index, the apply worker can use the
first match only if the index is the relation's replica identity or
primary key. Otherwise, every match must be compared with the search slot.
Only the index OID was saved in the relation map, so this was determined
again during the search. Concurrent DROP INDEX or REINDEX can change the
index status between these two checks, causing the tuple search to fail
and the change to be silently skipped as an update_missing conflict.
Fix this by recording the answer as idxisreplident in the relation map
entry and avoid getting it second time in FindReplTupleInLocalRel() and
RelationFindReplTupleByIndex().
Oversight in 89e46da5e5.
Author: Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
Author: vignesh C <vignesh21@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Zhijie Hou <houzj.fnst@fujitsu.com>
Discussion: https://postgr.es/m/CADzfLwUJovFcnknCC9wjZKECX9xecgnGzC2r2TMV8h4QDD_jwQ@mail.gmail.com
Backpatch-through: 16, where it was introduced
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication (but see also below) examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level kerberos/ Tests for Kerberos/GSSAPI authentication and encryption ldap/ Tests for LDAP-based authentication locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication