Обсуждение: pgsql: Fix oversized memory allocation in Parallel Hash Join

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

Branch
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REL_13_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/60de25c6efc8e5283094c74824f46f71ae483a8f

Modified Files
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src/backend/executor/nodeHash.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)