3e8a0c1b02
As previously coded, walsummarizer only wants to read WAL from a file where the TimeLineID in the filename exactly matches the TimeLineID being summarized. But in some cases, when a timeline switch occurs, the WAL file from the old timeline is not archived, because it's never completely filled, so the only way to obtain the contents of that last partial segment is to read from the first segment on the new timeline. Teach WAL summarizer to do that, and add a test case to make sure that it works. Reported-by: Nick Ivanov <nick.ivanov@enterprisedb.com> Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru> Tested-by: Amit Kapila <amit.kapila16@gmail.com> Reviewed-by: Srinath Reddy Sadipiralla <srinath2133@gmail.com> Reviewed-by: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: Thom Brown <thom@linux.com> Discussion: http://postgr.es/m/CA+Tgmobr27GpKDZx3_ezW2+C5_g18i+jSK3sGF_cR-_ESv5N5A@mail.gmail.com 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/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/.