Álvaro Herrera
38470c2c1e
The existing logic computed an updated replicationSlotMinLSN from all slots' restart_lsn only when catalog_xmin also advanced. This is not a problem in normal (non-repack) cases, because catalog_xmin changes pretty frequently, so the recomputation is triggered frequently enough. However, REPACK does not currently change its catalog snapshot, so that doesn't work very well if no other replication slot is being used. (After this commit, we still don't recycle WAL properly for REPACK, because its background worker is not advancing its restart_lsn either; that will be fixed in a separate commit. However, this preexisting problem in older code is logically separate from that one.) Author: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Discussion: https://postgr.es/m/TY4PR01MB17718B44164522D0798F8E898940A2@TY4PR01MB17718.jpnprd01.prod.outlook.com
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
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