Support invalidating replication slots due to horizon and wal_level Needed for logical decoding on a standby. Slots need to be invalidated because of the horizon if rows required for logical decoding are removed. If the primary's wal_level is lowered from 'logical', logical slots on the standby need to be invalidated.
The new invalidation methods will be used in a subsequent commit. Logical slots that have been invalidated can be identified via the new pg_replication_slots.conflicting column. See 6af1793954e for an overall design of logical decoding on a standby. Bumps catversion for the addition of the new pg_replication_slots column. Author: "Drouvot, Bertrand" <[email protected]> Author: Andres Freund <[email protected]> Author: Amit Khandekar <[email protected]> (in an older version) Reviewed-by: "Drouvot, Bertrand" <[email protected]> Reviewed-by: Andres Freund <[email protected]> Reviewed-by: Robert Haas <[email protected]> Reviewed-by: FabrÃzio de Royes Mello <[email protected]> Reviewed-by: Bharath Rupireddy <[email protected]> Reviewed-by: Amit Kapila <[email protected]> Reviewed-by: Melanie Plageman <[email protected]> Reviewed-by: Alvaro Herrera <[email protected]> Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/be87200efd9308ccfe217ce8828f316e93e370da Modified Files -------------- doc/src/sgml/system-views.sgml | 10 ++ src/backend/access/transam/xlog.c | 8 +- src/backend/catalog/system_views.sql | 3 +- src/backend/replication/logical/logical.c | 7 ++ src/backend/replication/slot.c | 151 +++++++++++++++++++++++++----- src/backend/replication/slotfuncs.c | 12 ++- src/include/catalog/catversion.h | 2 +- src/include/catalog/pg_proc.dat | 6 +- src/include/replication/slot.h | 9 +- src/test/regress/expected/rules.out | 5 +- 10 files changed, 176 insertions(+), 37 deletions(-)
