41cbdab0ab
Previously, when pg_recvlogical lost connection, reconnected, and restarted replication, data that had already been flushed could be streamed again. This happened because the replication start position used when restarting replication was taken from the last standby status message, which could be older than the position of the last flushed data. As a result, some flushed data newer than the replication start position could exist and be re-sent. This commit fixes the issue by ensuring all written data is flushed to disk before restarting replication, and by using the last flushed position as the replication start point. This prevents already flushed data from being re-sent. Additionally, previously when the --no-loop option was used, pg_recvlogical could exit without flushing written data, potentially losing data. To fix this issue, this commit also ensures all data is flushed to disk before exiting due to --no-loop. Author: Fujii Masao <masao.fujii@gmail.com> Reviewed-by: Mircea Cadariu <cadariu.mircea@gmail.com> Reviewed-by: Yilin Zhang <jiezhilove@126.com> Reviewed-by: Dewei Dai <daidewei1970@163.com> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Discussion: https://postgr.es/m/CAHGQGwFeTymZQ7RLvMU6WuDGar8bUQCazg=VOfA-9GeBkg-FzA@mail.gmail.com |
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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/.