From: | Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi> |
---|---|
To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Report WAL flush, not insert, position in replication IDENTIFY_S |
Date: | 2015-02-06 09:33:26 |
Message-ID: | E1YJfHy-0001wU-Dr@gemulon.postgresql.org |
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Thread: | |
Lists: | pgsql-committers |
Report WAL flush, not insert, position in replication IDENTIFY_SYSTEM
When beginning streaming replication, the client usually issues the
IDENTIFY_SYSTEM command, which used to return the current WAL insert
position. That's not suitable for the intended purpose of that field,
however. pg_receivexlog uses it to start replication from the reported
point, but if it hasn't been flushed to disk yet, it will fail. Change
IDENTIFY_SYSTEM to report the flush position instead.
Backpatch to 9.1 and above. 9.0 doesn't report any WAL position.
Branch
------
REL9_1_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/0d36d9f2b9a2178bb19ffbe663e39818f51a0f82
Modified Files
--------------
doc/src/sgml/protocol.sgml | 2 +-
src/backend/replication/walsender.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
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