3eb2fecdbb
Previously, when logical replication was running, shutting down the publisher could cause the logical walsender to enter a busy loop and prevent the publisher from completing shutdown. During shutdown, the logical walsender waits for all pending WAL to be written out. However, some WAL records could remain unflushed, causing the walsender to wait indefinitely. The issue occurred because the walsender used XLogBackgroundFlush() to flush pending WAL. This function does not guarantee that all WAL is written. For example, WAL generated by a transaction without an assigned transaction ID that aborts might not be flushed. This commit fixes the bug by making the logical walsender call XLogFlush() instead, ensuring that all pending WAL is written and preventing the busy loop during shutdown. Backpatch to all supported versions. Author: Anthonin Bonnefoy <anthonin.bonnefoy@datadoghq.com> Reviewed-by: Alexander Lakhin <exclusion@gmail.com> Reviewed-by: Fujii Masao <masao.fujii@gmail.com> Discussion: https://postgr.es/m/CAO6_Xqo3co3BuUVEVzkaBVw9LidBgeeQ_2hfxeLMQcXwovB3GQ@mail.gmail.com Backpatch-through: 14 |
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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/18/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/18/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/.