From: | Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi> |
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To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Correctly detect SSI conflicts of prepared transactions after cr |
Date: | 2012-02-29 13:55:17 |
Message-ID: | E1S2jzx-0007oY-7t@gemulon.postgresql.org |
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Lists: | pgsql-committers |
Correctly detect SSI conflicts of prepared transactions after crash.
A prepared transaction can get new conflicts in and out after preparing, so
we cannot rely on the in- and out-flags stored in the statefile at prepare-
time. As a quick fix, make the conservative assumption that after a restart,
all prepared transactions are considered to have both in- and out-conflicts.
That can lead to unnecessary rollbacks after a crash, but that shouldn't be
a big problem in practice; you don't want prepared transactions to hang
around for a long time anyway.
Dan Ports
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/d6a7271958e61fe8029087a34483437292f41f6f
Modified Files
--------------
src/backend/storage/lmgr/predicate.c | 31 +++++++++++++++----------------
1 files changed, 15 insertions(+), 16 deletions(-)
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