]> git.ipfire.org Git - thirdparty/postgresql.git/commit
Refresh apply delay on reload of recovery_min_apply_delay at recovery
authorMichael Paquier <michael@paquier.xyz>
Mon, 16 Aug 2021 03:12:02 +0000 (12:12 +0900)
committerMichael Paquier <michael@paquier.xyz>
Mon, 16 Aug 2021 03:12:02 +0000 (12:12 +0900)
commit024fd44e0566fe2db264aaa3c6d45d0dfdd30b60
tree11ed65e589869d3fc1cb0504657a3f95fcf3379e
parent7915a9515cfb867d34c45f564daf70888274929f
Refresh apply delay on reload of recovery_min_apply_delay at recovery

This commit ensures that the wait interval in the replay delay loop
waiting for an amount of time defined by recovery_min_apply_delay is
correctly handled on reload, recalculating the delay if this GUC value
is updated, based on the timestamp of the commit record being replayed.

The previous behavior would be problematic for example with replay
still waiting even if the delay got reduced or just cancelled.  If the
apply delay was increased to a larger value, the wait would have just
respected the old value set, finishing earlier.

Author: Soumyadeep Chakraborty, Ashwin Agrawal
Reviewed-by: Kyotaro Horiguchi, Michael Paquier
Discussion: https://postgr.es/m/CAE-ML+93zfr-HLN8OuxF0BjpWJ17O5dv1eMvSE5jsj9jpnAXZA@mail.gmail.com
Backpatch-through: 9.6
src/backend/access/transam/xlog.c