c3de0f9eed
At the beginning of recovery, an orphaned two-phase file in an epoch different than the one defined in the checkpoint record could not be removed based on the assumptions that AdjustToFullTransactionId() relies on, assuming that all files would be either from the current epoch or from the previous epoch. If the checkpoint epoch was 0 while the 2PC file was orphaned and in the future, AdjustToFullTransactionId() would underflow the epoch used to build the 2PC file path. In non-assert builds, this would create a WARNING message referring to a 2PC file with an epoch of "FFFFFFFF" (or UINT32_MAX), as an effect of the underflow calculation, leaving the orphaned file around. Some tests are added with dummy 2PC files in the past and the future, checking that these are properly removed. Issue introduced by 5a1dfde8334b, that has switched two-phase state files to use FullTransactionIds. Reported-by: Vitaly Davydov Author: Michael Paquier Reviewed-by: Vitaly Davydov Discussion: https://postgr.es/m/13b5b6-676c3080-4d-531db900@47931709 Backpatch-through: 17
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/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/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/.