]> 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 03:11:53 +0000 (12:11 +0900)
committerMichael Paquier <michael@paquier.xyz>
Mon, 16 Aug 2021 03:11:53 +0000 (12:11 +0900)
commit7f0873f328efe057090071805be3f1ade48ecc8a
tree0c111d0cf08a21a42532d7914276b7cbc353e86f
parent48695decc27159275a10cf9e1f31bae51f311305
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