065583cf46
Before this commit, when the WAL summarizer started up or recovered from an error, it would resume summarization from wherever it left off. That was OK normally, but wrong if summarize_wal=off had been turned off temporary, allowing some WAL to be removed, and then turned back on again. In such cases, the WAL summarizer would simply hang forever. This commit changes the reinitialization sequence for WAL summarizer to rederive the starting position in the way we were already doing at initial startup, fixing the problem. Per report from Israel Barth Rubio. Reviewed by Tom Lane. Discussion: http://postgr.es/m/CA+TgmoYN6x=YS+FoFOS6=nr6=qkXZFWhdiL7k0oatGwug2hcuA@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.
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/.