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While building a new attrmap which maps partition attribute numbers to remoterel's, we incorrectly update the map for dropped column attributes. Later, it caused cache look-up failure when we tried to use the map to fetch the information about attributes. This also fixes the partition map cache invalidation which was using the wrong type cast to fetch the entry. We were using stale partition map entry after invalidation which leads to the assertion or cache look-up failure. Reported-by: Shi Yu Author: Hou Zhijie, Shi Yu Reviewed-by: Amit Langote, Amit Kapila Backpatch-through: 13, where it was introduced Discussion: https://postgr.es/m/OSZPR01MB6310F46CD425A967E4AEF736FDA49@OSZPR01MB6310.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/.