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Before restarting a tablesync worker for the same relation, wait wal_retrieve_retry_interval (currently 5s by default). This avoids restarting failing workers in a tight loop. We keep the last start times in a hash table last_start_times that is separate from the table_states list, because that list is cleared out on syscache invalidation, which happens whenever a table finishes syncing. The hash table is kept until all tables have finished syncing. A future project might be to unify these two and keep everything in one data structure, but for now this is a less invasive change to accomplish the original purpose. For the test suite, set wal_retrieve_retry_interval to its minimum value, to not increase the test suite run time. Reviewed-by: Petr Jelinek <petr.jelinek@2ndquadrant.com> Reported-by: Masahiko Sawada <sawada.mshk@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: 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/.