b82c877e76
Buildfarm member 'prion', which is configured with
-DRELCACHE_FORCE_RELEASE -DCATCACHE_FORCE_RELEASE, failed with errors
like this:
ERROR: could not read blocks 0..0 in file "global/2672": read only 0 of 8192 bytes
while running a parallel test group that includes VACUUM FULL on some
catalog tables among other things. I was not able to reproduce that
just by running the tests with -DRELCACHE_FORCE_RELEASE
-DCATCACHE_FORCE_RELEASE, even though 'prion' hit it on first run
after commit 2b9b8ebbf8, so there might be something else that makes
it more susceptible to the race. However, I was able to reproduce it
by adding another test to the same test group that runs "vacuum full
pg_database" repeatedly.
The problem is that RelationReloadIndexInfo() no longer calls
RelationInitPhysicalAddr() on a nailed, shared index, when an
invalidation happens early during backend startup, before the critical
relcaches have been built. Before commit 2b9b8ebbf8, that was done by
RelationReloadNailed(), but it went missing from that path. Add it
back as an explicit step.
Broken by commit 2b9b8ebbf8, which refactored these functions.
Discussion: https://www.postgresql.org/message-id/db876575-8f5b-4193-a538-df7e1f92d47a%40iki.fi
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.