mirror of
https://github.com/postgres/postgres.git
synced 2025-05-11 05:41:32 +03:00
e83ebfe6d7
Commits 74cf7d46 and a61daa14 fixed pg_upgrade bugs involving oversights in how relfrozenxid or relminmxid are carried forward or initialized. Corruption caused by bugs of this nature was ameliorated by commit 78db307bb2, which taught VACUUM to always overwrite existing invalid relfrozenxid or relminmxid values that are apparently "in the future". Extend that work now by showing a warning in the event of overwriting either relfrozenxid or relminmxid due to an existing value that is "in the future". There is probably a decent chance that the sanity checks added by commit 699bf7d05c will raise an error before VACUUM reaches this point, but we shouldn't rely on that. Author: Peter Geoghegan <pg@bowt.ie> Reviewed-By: Andres Freund <andres@anarazel.de> Discussion: https://postgr.es/m/CAH2-WzmRZEzeGvLv8yDW0AbFmSvJjTziORqjVUrf74mL4GL0Ww@mail.gmail.com
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/.