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a28d731a11
If a commit or abort record includes "dropped relfilenodes", then replaying the record will remove data files. That is surely a "special rel update", but the records were not marked as such. Fix that, teach pg_rewind to expect and ignore them, and add a test case to cover it. It's always been like this, but no backporting for fear of breaking existing applications. If an application parsed the WAL but was not handling commit/abort records, it would stop working. That might be a good thing if it really needed to handle the dropped rels, but it will be caught when the application is updated to work with PostgreSQL v14 anyway. Discussion: https://www.postgresql.org/message-id/07b33e2c-46a6-86a1-5f9e-a7da73fddb95%40iki.fi Reviewed-by: Amit Kapila, Michael Paquier |
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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/.