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PostgresNode blithely ignored the exit status of pg_ctl, and in general made no effort to be sure that the server was running when it should be. This caused it to miss server crashes, which is a serious shortcoming in a test scaffold. Make it complain if pg_ctl fails, and modify the start and stop logic to complain if the server doesn't start, or doesn't stop, when expected. Also, have it turn off the "restart_after_crash" configuration parameter in created clusters, as bitter experience has shown that leaving that on can mask crashes too. We might at some point need variant functions that allow for, eg, server start failure to be expected. But no existing test case appears to want that, and it surely shouldn't be the default behavior. Note that this *will* break the buildfarm, as it will expose known bugs that the previous testing failed to. I'm committing it despite that, to verify that we get the expected failures in the buildfarm not just in manual testing. Back-patch into 9.6 where PostgresNode was introduced. (The 9.6 branch is not expected to show any failures.) Discussion: https://postgr.es/m/21432.1492886428@sss.pgh.pa.us |
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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/.