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Make SP-GiST redirect cleanup more aggressive.

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Commit 61b313e4 made VACUUM pass down a heaprel to index AM bulkdelete
and vacuumcleanup routines.  Although this was primarily intended as
preparation for logical decoding on standbys, it also made it easy to
correct an old deficiency in how we determine how to cleanup SP-GiST
redirect and placeholder tuples.

Pass the heaprel to GlobalVisTestFor() during cleanup of redirect and
placeholder tuples, rather than pessimistically passing NULL.

Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Discussion: https://postgr.es/m/02392033-f030-a3c8-c7d0-5c27eb529fec@gmail.com
This commit is contained in:
Peter Geoghegan 2023-04-03 11:47:48 -07:00
parent e48c817395
commit 05a304a855
1 changed files with 1 additions and 2 deletions
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src/backend/access/spgist/spgvacuum.c
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@ -507,8 +507,7 @@ vacuumRedirectAndPlaceholder(Relation index, Relation heaprel, Buffer buffer)
xlrec.nToPlaceholder = 0;
xlrec.snapshotConflictHorizon = InvalidTransactionId;
/* XXX: providing heap relation would allow more pruning */
vistest = GlobalVisTestFor(NULL);
vistest = GlobalVisTestFor(heaprel);
START_CRIT_SECTION();