pgsql: Log long wait time on recovery conflict when it's resolved.

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pgsql: Log long wait time on recovery conflict when it's resolved.

Fujii Masao-3
Log long wait time on recovery conflict when it's resolved.

This is a follow-up of the work done in commit 0650ff2303. This commit
extends log_recovery_conflict_waits so that a log message is produced
also when recovery conflict has already been resolved after deadlock_timeout
passes, i.e., when the startup process finishes waiting for recovery
conflict after deadlock_timeout. This is useful in investigating how long
recovery conflicts prevented the recovery from applying WAL.

Author: Fujii Masao
Reviewed-by: Kyotaro Horiguchi, Bertrand Drouvot
Discussion: https://postgr.es/m/9a60178c-a853-1440-2cdc-c3af916cff59@...

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/39b03690b529935a3c33024ee68f08e2d347cf4f

Modified Files
--------------
doc/src/sgml/config.sgml            |  2 +-
src/backend/storage/buffer/bufmgr.c | 12 +++++++++-
src/backend/storage/ipc/standby.c   | 47 ++++++++++++++++++++++++++++---------
src/backend/storage/lmgr/proc.c     | 12 +++++++++-
src/include/storage/standby.h       |  3 ++-
5 files changed, 61 insertions(+), 15 deletions(-)