e7ef2cf256
pg_blocking_pids() assumes that members of the same lock group
never block each other, but that hasn't been true for relation
extension locks since v13. This commit teaches the function to
report lock group members as blockers for relation extension locks.
Since parallel workers are reported with their leader's PID, the
result may now include the blocked session's own PID.
Oversight in commit 85f6b49c2c.
Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Reviewed-by: Kirill Reshke <reshkekirill@gmail.com>
Reviewed-by: Shihao Zhong <zhong950419@gmail.com>
Discussion: https://postgr.es/m/apTpV8h%2BCYHf%2B1PJ%40bdtpg
Backpatch-through: 14
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/.