database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-28 11:44:57 +03:00
Code Activity

Add slotsync skip statistics.

Browse Source 
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 <shlok.kyal.oss@gmail.com>
Reviewed-by: shveta malik <shveta.malik@gmail.com>
Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Reviewed-by: Ashutosh Sharma <ashu.coek88@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Discussion: https://postgr.es/m/CAE9k0PkhfKrTEAsGz4DjOhEj1nQ+hbQVfvWUxNacD38ibW3a1g@mail.gmail.com
This commit is contained in:
Amit Kapila
2025-11-25 06:47:49 +00:00
parent c581c9a7ac
commit 76b78721ca
11 changed files with 212 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
contrib/test_decoding/expected/stats.out
View File

@@ -78,17 +78,17 @@ SELECT slot_name, spill_txns = 0 AS spill_txns, spill_count = 0 AS spill_count,
-- verify accessing/resetting stats for non-existent slot does something reasonable
SELECT * FROM pg_stat_get_replication_slot('do-not-exist');
slot_name | spill_txns | spill_count | spill_bytes | stream_txns | stream_count | stream_bytes | mem_exceeded_count | total_txns | total_bytes | stats_reset
--------------+------------+-------------+-------------+-------------+--------------+--------------+--------------------+------------+-------------+-------------
do-not-exist | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
slot_name | spill_txns | spill_count | spill_bytes | stream_txns | stream_count | stream_bytes | mem_exceeded_count | total_txns | total_bytes | slotsync_skip_count | slotsync_skip_at | stats_reset
--------------+------------+-------------+-------------+-------------+--------------+--------------+--------------------+------------+-------------+---------------------+------------------+-------------
do-not-exist | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
(1 row)
SELECT pg_stat_reset_replication_slot('do-not-exist');
ERROR: replication slot "do-not-exist" does not exist
SELECT * FROM pg_stat_get_replication_slot('do-not-exist');
slot_name | spill_txns | spill_count | spill_bytes | stream_txns | stream_count | stream_bytes | mem_exceeded_count | total_txns | total_bytes | stats_reset
--------------+------------+-------------+-------------+-------------+--------------+--------------+--------------------+------------+-------------+-------------
do-not-exist | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
slot_name | spill_txns | spill_count | spill_bytes | stream_txns | stream_count | stream_bytes | mem_exceeded_count | total_txns | total_bytes | slotsync_skip_count | slotsync_skip_at | stats_reset
--------------+------------+-------------+-------------+-------------+--------------+--------------+--------------------+------------+-------------+---------------------+------------------+-------------
do-not-exist | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
(1 row)
-- spilling the xact