ede6acef49
WaitLSNWakeup() incorrectly returned early when called with InvalidXLogRecPtr (meaning "wake all waiters"), because the fast-path check compared minWaitedLSN > 0 without validating currentLSN first. This caused WAIT FOR LSN commands to wait indefinitely during standby promotion until random signals woke them. Add an XLogRecPtrIsValid() check before the comparison so that InvalidXLogRecPtr bypasses the fast-path and wakes all waiters immediately. Discussion: https://postgr.es/m/CABPTF7UieOYbOgH3EnQCasaqcT1T4N6V2wammwrWCohQTnD_Lw%40mail.gmail.com Author: Xuneng Zhou <xunengzhou@gmail.com> Reviewed-by: Alexander Korotkov <aekorotkov@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/.