Add slotsync skip statistics. This patch adds two new columns to the pg_stat_replication_slots view: slotsync_skip_count - the total number of times a slotsync operation was skipped. slotsync_skip_at - the timestamp of the most recent skip.
These additions provide better visibility into replication slot synchronization behavior. A future patch will introduce the slotsync_skip_reason column in pg_replication_slots to capture the reason for skip. Author: Shlok Kyal <[email protected]> Reviewed-by: shveta malik <[email protected]> Reviewed-by: Hayato Kuroda <[email protected]> Reviewed-by: Ashutosh Sharma <[email protected]> Reviewed-by: Amit Kapila <[email protected]> Discussion: https://postgr.es/m/cae9k0pkhfkrteasgz4djohej1nq+hbqvfvwuxnacd38ibw3...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/76b78721ca49c16dfcbfbd2f4f87fcdb2db2bbb6 Modified Files -------------- contrib/test_decoding/expected/stats.out | 12 +-- doc/src/sgml/monitoring.sgml | 24 ++++++ src/backend/catalog/system_views.sql | 2 + src/backend/replication/logical/slotsync.c | 89 ++++++++++++++++------ src/backend/utils/activity/pgstat_replslot.c | 32 +++++++- src/backend/utils/adt/pgstatfuncs.c | 18 ++++- src/include/catalog/catversion.h | 2 +- src/include/catalog/pg_proc.dat | 6 +- src/include/pgstat.h | 5 +- .../recovery/t/040_standby_failover_slots_sync.pl | 60 ++++++++++++++- src/test/regress/expected/rules.out | 4 +- 11 files changed, 212 insertions(+), 42 deletions(-)
