Horton

Add %P to log_line_prefix for parallel group leader

Michael Paquier <michael@paquier.xyz>

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Commit: b8fdee7d0ca8bd2165d46fb1468f75571b706a01
Author: Michael Paquier <michael@paquier.xyz>
Date: 2020-08-03T04:38:48Z
Releases: 14.0 
Add %P to log_line_prefix for parallel group leader

This is useful for monitoring purposes with log parsing.  Similarly to
pg_stat_activity, the leader's PID is shown only for active parallel
workers, minimizing the log footprint for the leaders as the equivalent
shared memory field is set as long as a backend is alive.

Author: Justin Pryzby
Reviewed-by: Álvaro Herrera, Michael Paquier, Julien Rouhaud, Tom Lane
Discussion: https://postgr.es/m/20200315111831.GA21492@telsasoft.com

Files

PathChange+/−
doc/src/sgml/config.sgml modified +8 −1
src/backend/utils/error/elog.c modified +38 −0
src/backend/utils/misc/postgresql.conf.sample modified +1 −0

Documentation touched

Discussion