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Slow buildfarm machines have run into issues with this TAP test caused by a race condition related to the startup of a set of standbys, where it is possible to finish with an unexpected order in the WAL sender array of the primary. This closes the race condition by making sure that any standby started is registered into the WAL sender array of the primary before starting the next one based on lookups of pg_stat_replication. Backpatch down to 9.6 where the test has been introduced. Author: Michael Paquier Reviewed-by: Álvaro Herrera, Noah Misch Discussion: https://postgr.es/m/20190617055145.GB18917@paquier.xyz Backpatch-through: 9.6
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/.