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I managed to break this test in two different ways in commit 05036a3155. First, the output of the new call to tuple_data_split() on the test sequence is dependent on endianness. This is fixed by setting a special start value for the test sequence that produces the same output regardless of the endianness of the machine. Second, on versions older than v15, the new test case fails under "force_parallel_mode = regress" with the following error: ERROR: cannot access temporary tables during a parallel operation This is because pageinspect's disk-accessing functions are incorrectly marked PARALLEL SAFE on versions older than v15 (see commit aeaaf520f4 for details). This one is fixed by changing the test sequence to be permanent. The only reason it was previously marked temporary was to avoid needing a DROP SEQUENCE command at the end of the test. Unlike some other tests in this file, the use of a permanent sequence here shouldn't result in any test instability like what was fixed by commit e2933a6e11. Reviewed-by: Tom Lane Discussion: https://postgr.es/m/ZuOKOut5hhDlf_bP%40nathan Backpatch-through: 12
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/.