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Buildfarm member olingo intermittently failed this test, timing out while waiting for the subscriber log to report an ERROR because max_prepared_transactions is zero there. The test captured the log offset only after issuing the publisher's BEGIN/INSERT/PREPARE TRANSACTION/COMMIT PREPARED sequence. Since streaming is enabled, the subscriber can receive and apply the transaction, and log the expected ERROR, before that publisher SQL command even returns, i.e. before the test captures the offset. The subsequent wait_for_log() calls then searched only from a point after the message had already been written, and timed out waiting for it. Fix by moving the offset capture to before the publisher's transaction is issued, ensuring it always precedes the point where the ERROR can appear in the subscriber log. Reported-by: Alexander Lakhin <exclusion@gmail.com> Author: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Backpatch-through: 16, where test was introduced Discussion: https://postgr.es/m/c43753d8-5265-4f77-83ff-9b1167276ec5@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/.