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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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Michael Paquier a6c70f68cd Revert recent changes related to handling of 2PC files at recovery 
This commit reverts 8f67f994e8ea (down to v13) and c3de0f9eed38 (down to
v17), as these are proving to not be completely correct regarding two
aspects:
- In v17 and newer branches, c3de0f9eed38's check for epoch handling is
incorrect, and does not correctly handle frozen epochs.  A logic closer
to widen_snapshot_xid() should be used.  The 2PC code should try to
integrate deeper with FullTransactionIds, 5a1dfde833 being not enough.
- In v13 and newer branches, 8f67f994e8ea is a workaround for the real
issue, which is that we should not attempt CLOG lookups without reaching
consistency.  This exists since 728bd991c3, and this is reachable with
ProcessTwoPhaseBuffer() called by restoreTwoPhaseData() at the beginning
of recovery.

Per discussion with Noah Misch.

Discussion: https://postgr.es/m/20250116010051.f3.nmisch@google.com
Backpatch-through: 13
2025-01-17 13:27:39 +09:00
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doc Seek zone abbreviations in the IANA data before timezone_abbreviations. 2025-01-16 14:11:19 -05:00
src Revert recent changes related to handling of 2PC files at recovery 2025-01-17 13:27:39 +09:00
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README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

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/.