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Previously when the standby server failed to retrieve WAL files from any sources (i.e., streaming replication, local pg_xlog directory or WAL archive), it always waited for five seconds (hard-coded) before the next attempt. For example, this is problematic in warm-standby because restore_command can fail every five seconds even while new WAL file is expected to be unavailable for a long time and flood the log files with its error messages. This commit adds new parameter, wal_retrieve_retry_interval, to control that wait time. Alexey Vasiliev and Michael Paquier, reviewed by Andres Freund and me.
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.