| From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Avoid hot standby cancels from VAC FREEZE |
| Date: | 2016-05-25 23:40:28 |
| Message-ID: | E1b5iPc-0005Xj-8v@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
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.
Branch
------
REL9_3_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/6537a48c5521cb2fc401e18fe678633a688965b5
Modified Files
--------------
src/backend/access/heap/heapam.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
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