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This will write the received transaction log into a file called pg_wal.tar(.gz) next to the other tarfiles instead of writing it to base.tar. When using fetch mode, the transaction log is still written to base.tar like before, and when used against a pre-10 server, the file is named pg_xlog.tar. To do this, implement a new concept of a "walmethod", which is responsible for writing the WAL. Two implementations exist, one that writes to a plain directory (which is also used by pg_receivexlog) and one that writes to a tar file with optional compression. Reviewed by Michael Paquier
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/.