
This problem has been introduced by commit 272248a0c1 where we started assigning the subtransactions to the top-level transaction when we mark both the top-level transaction and its subtransactions as containing catalog changes. After we assign subtransactions to the top-level transaction, we were not allowed to execute any invalidations associated with it when we decide to skip the transaction. The reason to assign the subtransactions to the top-level transaction was to avoid the assertion failure in AssertTXNLsnOrder() as they have the same LSN when we sometimes start accumulating transaction changes for partial transactions after the restart. Now that with commit 64ff0fe4e8, we skip this assertion check until we reach the LSN at which we start decoding the contents of the transaction, so, there is no reason for such an assignment anymore. The assignment change was introduced in 15 and prior versions but this bug doesn't exist in branches prior to 14 since we don't add invalidation messages to subtransactions. We decided to backpatch through 11 for consistency but not for 10 since its final release is near. Reported-by: Kuroda Hayato Author: Masahiko Sawada Reviewed-by: Amit Kapila Backpatch-through: 11 Discussion: https://postgr.es/m/TYAPR01MB58660803BCAA7849C8584AA4F57E9%40TYAPR01MB5866.jpnprd01.prod.outlook.com Discussion: https://postgr.es/m/a89b46b6-0239-2fd5-71a9-b19b1f7a7145%40enterprisedb.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/.
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