490259d072
Unlike the slotsync worker, whose retry cycles are separated by transaction boundaries, pg_sync_replication_slots() retries within a single SQL function call. Per-cycle allocations for slot names, plugin names, database names, and auxiliary list containers get accumulated across retries until the function returned. Memory growth is proportional to the number of retries and remote slots, and the function may wait an extended period between cycles when slots are slow to persist. Fix by running each retry cycle in a short-lived memory context (sync_retry_ctx) that is reset before the next attempt. Additionally, release tuple slots created with MakeSingleTupleTableSlot() before clearing the walreceiver result. Author: Xuneng Zhou <xunengzhou@gmail.com> Reviewed-by: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: shveta malik <shveta.malik@gmail.com> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Discussion: https://postgr.es/m/CABPTF7VVPxgfYyr8Kyi=+JACjckQ6NpniV9eRtHboj2hMn0REw@mail.gmail.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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.