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41d5f8ad73
When doing logical decoding using START_LOGICAL_REPLICATION in a walsender process the walsender sometimes was sending out keepalive messages too frequently. Asking for feedback every time. WalSndWaitForWal() sends out keepalive messages when it's waiting for new WAL to be generated locally when it sees that the remote side hasn't yet flushed WAL up to the local position. That generally is good but causes problems if the remote side only writes but doesn't flush changes yet. So check for both remote write and flush position. Additionally we've asked for feedback to the keepalive message which isn't warranted when waiting for WAL in contrast to preventing timeouts because of wal_sender_timeout. Complaint and patch by Steve Singer. |
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| README.git | ||
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/.