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a8dd62ef49
As coded, the function relied on index_open() when opening an index relation, allowing partitioned indexes to be processed by pgstathashindex(). This was leading to a "could not open file" error because partitioned indexes have no physical files, or to a crash with an assertion failure (like on HEAD). This issue is fixed by applying the same checks as the other stat functions for indexes, with a lookup at both RELKIND_INDEX and the index AM expected. Author: Alexander Lakhin Discussion: https://postgr.es/m/18246-f4d9ff7cb3af77e6@postgresql.org Backpatch-through: 12
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. 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, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.