diff options
| author | Andres Freund | 2023-04-08 06:11:28 +0000 |
|---|---|---|
| committer | Andres Freund | 2023-04-08 07:05:44 +0000 |
| commit | 26669757b6a7665c1069e77e6472bd8550193ca6 (patch) | |
| tree | b60b91e8fa8276744b171a7a5714ffb5b8918f66 /src/include/pgstat.h | |
| parent | be87200efd9308ccfe217ce8828f316e93e370da (diff) | |
Handle logical slot conflicts on standby
During WAL replay on the standby, when a conflict with a logical slot is
identified, invalidate such slots. There are two sources of conflicts:
1) Using the information added in 6af1793954e, logical slots are invalidated if
required rows are removed
2) wal_level on the primary server is reduced to below logical
Uses the infrastructure introduced in the prior commit. FIXME: add commit
reference.
Change InvalidatePossiblyObsoleteSlot() to use a recovery conflict to
interrupt use of a slot, if called in the startup process. The new recovery
conflict is added to pg_stat_database_conflicts, as confl_active_logicalslot.
See 6af1793954e for an overall design of logical decoding on a standby.
Bumps catversion for the addition of the pg_stat_database_conflicts column.
Bumps PGSTAT_FILE_FORMAT_ID for the same reason.
Author: "Drouvot, Bertrand" <bertranddrouvot.pg@gmail.com>
Author: Andres Freund <andres@anarazel.de>
Author: Amit Khandekar <amitdkhan.pg@gmail.com> (in an older version)
Reviewed-by: "Drouvot, Bertrand" <bertranddrouvot.pg@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Reviewed-by: FabrÃzio de Royes Mello <fabriziomello@gmail.com>
Reviewed-by: Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/20230407075009.igg7be27ha2htkbt@awork3.anarazel.de
Diffstat (limited to 'src/include/pgstat.h')
| -rw-r--r-- | src/include/pgstat.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/pgstat.h b/src/include/pgstat.h index be2288ed7a3..a1e51404970 100644 --- a/src/include/pgstat.h +++ b/src/include/pgstat.h @@ -235,7 +235,7 @@ typedef struct PgStat_TableXactStatus * ------------------------------------------------------------ */ -#define PGSTAT_FILE_FORMAT_ID 0x01A5BCAB +#define PGSTAT_FILE_FORMAT_ID 0x01A5BCAC typedef struct PgStat_ArchiverStats { @@ -332,6 +332,7 @@ typedef struct PgStat_StatDBEntry PgStat_Counter conflict_tablespace; PgStat_Counter conflict_lock; PgStat_Counter conflict_snapshot; + PgStat_Counter conflict_logicalslot; PgStat_Counter conflict_bufferpin; PgStat_Counter conflict_startup_deadlock; PgStat_Counter temp_files; |