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Commit 7b64e4b3 taught DropSubscription() to drop stats entry of subscription that is not associated with a replication slot for apply worker at DROP SUBSCRIPTION but missed covering the case where the subscription is not associated with replication slots for both apply worker and tablesync worker. Also add a test to verify that the stats for slot-less subscription is removed at DROP SUBSCRIPTION time. Backpatch down to 15. Author: Masahiko Sawada Reviewed-by: Nathan Bossart, Hayato Kuroda, Melih Mutlu, Amit Kapila Discussion: https://postgr.es/m/CAD21AoB71zkP7uPT7JDPsZcvp0749ExEQnOJxeNKPDFisHar+w@mail.gmail.com Backpatch-through: 15
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/.