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Commit ecd9e9f0b fixed the problem in the wrong place, causing unwanted side-effects on the behavior of GetNextTempTableSpace(). Instead, let's make SharedFileSetInit() responsible for subbing in the value of MyDatabaseTableSpace when the default tablespace is called for. The convention about what is in the tempTableSpaces[] array is evidently insufficiently documented, so try to improve that. It also looks like SharedFileSetInit() is doing the wrong thing in the case where temp_tablespaces is empty. It was hard-wiring use of the pg_default tablespace, but it seems like using MyDatabaseTableSpace is more consistent with what happens for other temp files. Back-patch the reversion of PrepareTempTablespaces()'s behavior to 9.5, as ecd9e9f0b was. The changes in SharedFileSetInit() go back to v11 where that was introduced. (Note there is net zero code change before v11 from these two patch sets, so nothing to release-note.) Magnus Hagander and Tom Lane Discussion: https://postgr.es/m/CABUevExg5YEsOvqMxrjoNvb3ApVyH+9jggWGKwTDFyFCVWczGQ@mail.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/.