Thread: pgsql: Avoid hot standby cancels from VAC FREEZE

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.

Backpatch to all versions 9.0+

Analysis and report by Marco Nenciarini

Bug fix by Simon Riggs

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/9e23d05b256adb0964f13464f9be5ae6e856cd19

Modified Files
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src/backend/access/heap/heapam.c |    8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)