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By default, the fallback_application_name for a physical walreceiver is "walreceiver". This means that multiple standbys cannot be distinguished easily on a primary, for example in pg_stat_activity or synchronous_standby_names. If cluster_name is set, use that for fallback_application_name in the walreceiver. (If it's not set, it remains "walreceiver".) If someone set cluster_name to identify their instance, we might as well use that by default to identify the node remotely as well. It's still possible to specify another application_name in primary_conninfo explicitly. Reviewed-by: Euler Taveira <euler@timbira.com.br> Discussion: https://www.postgresql.org/message-id/flat/1257eaee-4874-e791-e83a-46720c72cac7@2ndquadrant.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/.