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Previously "waiting" could appear twice via PS in case of lock conflict in hot standby mode. Specifically this issue happend when the delay in WAL application determined by max_standby_archive_delay and max_standby_streaming_delay had passed but it took more than 500 msec to cancel all the conflicting transactions. Especially we can observe this easily by setting those delay parameters to -1. The cause of this issue was that WaitOnLock() and ResolveRecoveryConflictWithVirtualXIDs() added "waiting" to the process title in that case. This commit prevents ResolveRecoveryConflictWithVirtualXIDs() from reporting waiting in case of lock conflict, to fix the bug. Back-patch to all back branches. Author: Masahiko Sawada Reviewed-by: Fujii Masao Discussion: https://postgr.es/m/CA+fd4k4mXWTwfQLS3RPwGr4xnfAEs1ysFfgYHvmmoUgv6Zxvmg@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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.