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Andreas Seltenreich found another case where we were being too optimistic about allowing a plan to be considered parallelizable despite it containing initPlans. It seems like the real issue here is that if we know we are going to tack initPlans onto the topmost Plan node for a subquery, we had better mark that subquery's result Paths as not-parallel-safe. That fixes this problem and allows reversion of a kluge (added in commit 7b67a0a49 and extended in f24cf960d) to not trust the parallel_safe flag at top level. Discussion: <874m2w4k5d.fsf@ex.ansel.ydns.eu>
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/.