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authorAlvaro Herrera <alvherre@alvh.no-ip.org>2016-05-25 19:39:49 -0400
committerAlvaro Herrera <alvherre@alvh.no-ip.org>2016-05-25 19:39:49 -0400
commit7a0f09da7dc3378130547c81e47b9c96bcfd0634 (patch)
treebb3b8e46c1cff85392741f92c5c76448ec3f8499 /src/backend/tcop/postgres.c
parent4b612a78fdb501f79c768f65075df167477a5017 (diff)
downloadpostgresql-7a0f09da7dc3378130547c81e47b9c96bcfd0634.tar.gz
postgresql-7a0f09da7dc3378130547c81e47b9c96bcfd0634.zip
Avoid hot standby cancels from VAC FREEZE
VACUUM FREEZE generated false cancelations of standby queries on an otherwise idle master. Caused by an off-by-one error on cutoff_xid which goes back to original commit. Analysis and report by Marco Nenciarini Bug fix by Simon Riggs This is a correct backpatch of commit 66fbcb0d2e to branches 9.1 through 9.4. That commit was backpatched to 9.0 originally, but it was immediately reverted in 9.0-9.4 because it didn't compile.
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