Fix bug in clean shutdown of walsender that pg_receiving is connecting to.
On clean shutdown, walsender waits for all WAL to be replicated to a standby,
and exits. It determined whether that replication had been completed by
checking whether its sent location had been equal to a standby's flush
location. Unfortunately this condition never becomes true when the standby
such as pg_receivexlog which always returns an invalid flush location is
connecting to walsender, and then walsender waits forever.
This commit changes walsender so that it just checks a standby's write
location if a flush location is invalid.
Back-patch to 9.1 where enough infrastructure for this exists.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/5c6d9fc4b2b8b6688a482a4b4116d7642e36b9d9
Modified Files
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src/backend/replication/walsender.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)