From d811c037cea2e929ee5823aab6e1bca0df8be245 Mon Sep 17 00:00:00 2001 From: Andres Freund Date: Tue, 21 Apr 2015 11:51:06 +0200 Subject: Add 'active_in' column to pg_replication_slots. Right now it is visible whether a replication slot is active in any session, but not in which. Adding the active_in column, containing the pid of the backend having acquired the slot, makes it much easier to associate pg_replication_slots entries with the corresponding pg_stat_replication/pg_stat_activity row. This should have been done from the start, but I (Andres) dropped the ball there somehow. Author: Craig Ringer, revised by me Discussion: CAMsr+YFKgZca5_7_ouaMWxA5PneJC9LNViPzpDHusaPhU9pA7g@mail.gmail.com --- doc/src/sgml/catalogs.sgml | 10 ++++++++++ doc/src/sgml/logicaldecoding.sgml | 8 ++++---- 2 files changed, 14 insertions(+), 4 deletions(-) (limited to 'doc/src') diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml index d0b78f27827..98847354bd0 100644 --- a/doc/src/sgml/catalogs.sgml +++ b/doc/src/sgml/catalogs.sgml @@ -5400,6 +5400,16 @@ True if this slot is currently actively being used + + active_in + integer + + The process ID of the session using this slot if the slot + is currently actively being used. NULL if + inactive. + + + xmin xid diff --git a/doc/src/sgml/logicaldecoding.sgml b/doc/src/sgml/logicaldecoding.sgml index 36505678526..0810a2d1f97 100644 --- a/doc/src/sgml/logicaldecoding.sgml +++ b/doc/src/sgml/logicaldecoding.sgml @@ -62,10 +62,10 @@ postgres=# SELECT * FROM pg_create_logical_replication_slot('regression_slot', ' regression_slot | 0/16B1970 (1 row) -postgres=# SELECT * FROM pg_replication_slots; - slot_name | plugin | slot_type | datoid | database | active | xmin | catalog_xmin | restart_lsn ------------------+---------------+-----------+--------+----------+--------+--------+--------------+------------- - regression_slot | test_decoding | logical | 12052 | postgres | f | | 684 | 0/16A4408 +postgres=# SELECT slot_name, plugin, slot_type, database, active, restart_lsn FROM pg_replication_slots; + slot_name | plugin | slot_type | database | active | restart_lsn +-----------------+---------------+-----------+----------+--------+------------- + regression_slot | test_decoding | logical | postgres | f | 0/16A4408 (1 row) postgres=# -- There are no changes to see yet -- cgit v1.2.3