Ignore recovery_min_apply_delay until recovery has reached consistent state
Previously recovery_min_apply_delay was applied even before recovery
had reached consistency. This could cause us to wait a long time
unexpectedly for read-only connections to be allowed. It's problematic
because the standby was useless during that wait time.
This patch changes recovery_min_apply_delay so that it's applied once
the database has reached the consistent state. That is, even if the delay
is set, the standby tries to replay WAL records as fast as possible until
it has reached consistency.
Author: Michael Paquier
Reviewed-By: Julien Rouhaud
Reported-By: Greg Clough
Backpatch: 9.4, where recovery_min_apply_delay was added
Bug: #13770
Discussion: http://www.postgresql.org/message-id/20151111155006.2644.84564@wrigleys.postgresql.org
Branch
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REL9_5_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/f95f1ce003d1453d78a8dd05577d6c61b251d48d
Modified Files
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doc/src/sgml/recovery-config.sgml | 5 +++--
src/backend/access/transam/xlog.c | 4 ++++
2 files changed, 7 insertions(+), 2 deletions(-)