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The command is supported for physical slots for now, and returns the type of slot, its restart_lsn and its restart_tli. This will be useful for an upcoming patch related to pg_receivewal, to allow the tool to be able to stream from the position of a slot, rather than the last WAL position flushed by the backend (as reported by IDENTIFY_SYSTEM) if the archive directory is found as empty, which would be an advantage in the case of switching to a different archive locations with the same slot used to avoid holes in WAL segment archives. Author: Ronan Dunklau Reviewed-by: Kyotaro Horiguchi, Michael Paquier, Bharath Rupireddy Discussion: https://postgr.es/m/18708360.4lzOvYHigE@aivenronan
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/.