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Similar to commit d6ad34f341, this patch optimizes DropRelFileNodesAllBuffers() by avoiding the complete buffer pool scan and instead find the buffers to be invalidated by doing lookups in the BufMapping table. This optimization helps operations where the relation files need to be removed like Truncate, Drop, Abort of Create Table, etc. Author: Kirk Jamison Reviewed-by: Kyotaro Horiguchi, Takayuki Tsunakawa, and Amit Kapila Tested-By: Haiying Tang Discussion: https://postgr.es/m/OSBPR01MB3207DCA7EC725FDD661B3EDAEF660@OSBPR01MB3207.jpnprd01.prod.outlook.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/.