Fix oversized memory allocation in Parallel Hash Join
authorAlexander Korotkov <akorotkov@postgresql.org>
Sun, 7 Jan 2024 07:03:55 +0000 (09:03 +0200)
committerAlexander Korotkov <akorotkov@postgresql.org>
Sun, 7 Jan 2024 07:10:19 +0000 (09:10 +0200)
commit2a67b5a60ee68892bb028587ddc6de7650822480
tree618c227dd8bd441867117d149acba26a4cdcf210
parent5ef34a8fc3899a306fbc907a762fee0ba3782462
Fix oversized memory allocation in Parallel Hash Join

During the calculations of the maximum for the number of buckets, take into
account that later we round that to the next power of 2.

Reported-by: Karen Talarico
Bug: #16925
Discussion: https://postgr.es/m/16925-ec96d83529d0d629%40postgresql.org
Author: Thomas Munro, Andrei Lepikhov, Alexander Korotkov
Reviewed-by: Alena Rybakina
Backpatch-through: 12
src/backend/executor/nodeHash.c