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The following things are improved: - Fetch the system identifier from the source server before any WAL streaming loop. This triggers extra checks to make sure that pg_receivewal is still connected to a server with the same system ID with a correct timeline. - Switch umask() (for file creation mode mask) and RetrieveWalSegSize() (to fetch the size of WAL segments) a bit later before the initial stream attempt. If the connection was done with a database, pg_receivewal would fail but those commands were still executed, which was a waste. The slot creation and drop are now done before retrieving the segment size. Author: Bharath Rupireddy Reviewed-by: Ronan Dunklau, Michael Paquier Discussion: https://postgr.es/m/CALj2ACX00YYeyBfoi55Cy=NrP-FcfMgiYYx1qRUEib3yjCVoaA@mail.gmail.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/.