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Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
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Masahiko Sawada f4290f20dd Fix assertion failure in parallel vacuum with minimal maintenance_work_mem setting. 
bbf668d66f lowered the minimum value of maintenance_work_mem to
64kB. However, in parallel vacuum cases, since the initial underlying
DSA size is 256kB, it attempts to perform a cycle of index vacuuming
and table vacuuming with an empty TID store, resulting in an assertion
failure.

This commit ensures that at least one page is processed before index
vacuuming and table vacuuming begins.

Backpatch to 17, where the minimum maintenance_work_mem value was
lowered.

Reviewed-by: David Rowley <dgrowleyml@gmail.com>
Discussion: https://postgr.es/m/CAD21AoCEAmbkkXSKbj4dB+5pJDRL4ZHxrCiLBgES_g_g8mVi1Q@mail.gmail.com
Backpatch-through: 17
2025-03-18 16:37:02 -07:00
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contrib Introduce squashing of constant lists in query jumbling 2025-03-18 18:56:11 +01:00
doc Update guidance for running vacuumdb after pg_upgrade. 2025-03-18 16:32:56 -05:00
src Fix assertion failure in parallel vacuum with minimal maintenance_work_mem setting. 2025-03-18 16:37:02 -07:00
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README.md

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/.