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The regression tests were failing with CLOBBER_CACHE_ALWAYS enabled, as reported by buildfarm member jaguar. There was an Assert in BuildCachedPlan that asserted that the CachedPlanSource hadn't been invalidated since we called RevalidateCachedQuery, which in theory can't happen because we are holding locks on all the relevant database objects. However, CLOBBER_CACHE_ALWAYS generates a false positive by making an invalidation happen anyway; and on reflection, that could also occur as a result of a badly-timed sinval reset due to queue overflow. We could just remove the Assert and forge ahead with the not-really-stale querytree, but it seems safer to do another RevalidateCachedQuery call just to make real sure everything's OK. |
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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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.