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When cancelling REINDEX CONCURRENTLY after swapping the old and new indexes (for example interruption at step 5), the old index remains around and is marked as invalid. The old index should also be manually droppable to clean up the parent relation from any invalid indexes still remaining. For a partition index reindexed, pg_class.relispartition was not getting updated, causing the index to not be droppable as DROP INDEX would look for dependencies in a partition tree, which do not exist anymore after the swap phase is done. The fix here is simple: when swapping the old and new indexes, make sure that pg_class.relispartition is correctly switched, similarly to what is done for the index name. Reported-by: Justin Pryzby Author: Michael Paquier Discussion: https://postgr.es/m/20191015164047.GA22729@telsasoft.com 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. 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/.