33394ee6f2
In walwriter's main loop, WAL stats message is only sent if enough time has passed since last one was sent to reach PGSTAT_STAT_INTERVAL msecs. This is necessary to avoid overloading to the stats collector. But this can cause recent WAL stats to be unsent when walwriter exits. To ensure that all the WAL stats are sent, this commit makes walwriter force to send remaining WAL stats to the collector when it exits because of shutdown request. Note that those remaining WAL stats can still be unsent when walwriter exits with non-zero exit code (e.g., FATAL error). This is OK because that walwriter exit leads to server crash and subsequent recovery discards all the stats. So there is no need to send remaining stats in that case. Author: Masahiro Ikeda Reviewed-by: Fujii Masao Discussion: https://postgr.es/m/0509ad67b585a5b86a83d445dfa75392@oss.nttdata.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/.