[COMMITTERS] pgsql: Reset hot standby xmin after restart

Reset hot standby xmin after restart

Hot_standby_feedback could be reset by reload and worked correctly, but if
the server was restarted rather than reloaded the xmin was not reset.
Force reset always if hot_standby_feedback is enabled at startup.

Ants Aasma, Craig Ringer

Reported-by: Ants Aasma

Branch
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REL9_4_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/800d89a98a59e50cb69049fb91a9122396df64eb

Modified Files
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src/backend/replication/walreceiver.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)