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REPACK (CONCURRENTLY) suppresses logical decoding of the changes it applies to the transient heap. For an update, suppression keeps the tuple data out of the WAL record, but the record itself is still written, and decoding turned it into a change carrying neither a new nor an old tuple. An output plugin that asks for the changes made by heap rewrites therefore outputs an UPDATE with no data at all, reported under the name of the table being repacked. Ignore such records, as decoding already does for inserts. Updates on catalog relations don't carry the new tuple either, so we ignore them too. For deletes, REPACK sets XLH_DELETE_NO_LOGICAL instead. Backpatch to v19, where REPACK (CONCURRENTLY) was introduced. Reported-by: Thom Brown <thom@linux.com> Reviewed-by: Zhijie Hou (Fujitsu) <houzj.fnst@fujitsu.com> Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de> Discussion: https://postgr.es/m/CAA-aLv7L_-dOuHXjLh0Di66dExdOb=uTOzR=jtrqCmV0Wxyd2Q@mail.gmail.com Backpatch-through: 19
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
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/.