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Currently, the replication origin tracking of the tablesync worker is dropped by the apply worker. So, there will be a small lag between the tablesync worker exit and its origin tracking got removed. In the meantime, new tablesync workers can be launched and will try to set up a new origin tracking. This can lead the system to reach max configured limit (max_replication_slots) even if the user has configured the max limit considering the number of tablesync workers required in the system. We decided not to back-patch as this can occur in very narrow circumstances and users have to option to increase the configured limit by increasing max_replication_slots. Reported-by: Hubert Depesz Lubaczewski Author: Ajin Cherian Reviwed-by: Masahiko Sawada, Peter Smith, Hou Zhijie, Amit Kapila Discussion: https://postgr.es/m/20220714115155.GA5439@depesz.com |
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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. 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/.