705e20f855
Logical replication apply workers for a subscription can easily get stuck in an infinite loop of attempting to apply a change, triggering an error (such as a constraint violation), exiting with the error written to the subscription server log, and restarting. To partially remedy the situation, this patch adds a new subscription option named 'disable_on_error'. To be consistent with old behavior, this option defaults to false. When true, both the tablesync worker and apply worker catch any errors thrown and disable the subscription in order to break the loop. The error is still also written in the logs. Once the subscription is disabled, users can either manually resolve the conflict/error or skip the conflicting transaction by using pg_replication_origin_advance() function. After resolving the conflict, users need to enable the subscription to allow apply process to proceed. Author: Osumi Takamichi and Mark Dilger Reviewed-by: Greg Nancarrow, Vignesh C, Amit Kapila, Wang wei, Tang Haiying, Peter Smith, Masahiko Sawada, Shi Yu Discussion : https://postgr.es/m/DB35438F-9356-4841-89A0-412709EBD3AB%40enterprisedb.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/.