Horton

Deduplicate PageIsNew() check in lazy_scan_heap().

Andres Freund <andres@anarazel.de>

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Commit: d4b34f60c54904bb3647911dfd9d79d8a4fab430
Author: Andres Freund <andres@anarazel.de>
Date: 2020-03-30T20:56:40Z
Releases: 13.0 
Deduplicate PageIsNew() check in lazy_scan_heap().

The recheck isn't needed anymore, as RelationGetBufferForTuple() now
extends the relation with RBM_ZERO_AND_LOCK. Previously we needed to
handle the fact that relation extension extended the relation and then
separately acquired a lock on the page - while expecting that the page
is empty.

Reported-By: Ranier Vilela
Discussion: https://postgr.es/m/CAEudQArA_=J0D5T258xsCY6Xtf6wiH4b=QDPDgVS+WZUN10WDw@mail.gmail.com

Files

PathChange+/−
src/backend/access/heap/vacuumlazy.c modified +11 −21

Discussion

Cited messages not in the archive: CAEudQArA_=J0D5T258xsCY6Xtf6wiH4b=QDPDgVS+WZUN10WDw@mail.gmail.com