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If restart_lsn of logical replication slot gets behind more than max_slot_wal_keep_size from the current LSN, the logical replication slot would be invalidated and its restart_lsn is reset to an invalid LSN. If this logical replication slot with an invalid restart_lsn was specified as the source slot in pg_copy_logical_replication_slot(), the function caused the assertion failure unexpectedly. This assertion was added because restart_lsn should not be invalid before. But in v13, it can be invalid thanks to max_slot_wal_keep_size. So since this assertion is no longer useful, this commit removes it. This commit also changes the errcode in the error message that pg_copy_logical_replication_slot() emits when the slot with an invalid restart_lsn is specified, to more appropriate one. Back-patch to v13 where max_slot_wal_keep_size was added and the assertion was no longer valid. Author: Fujii Masao Reviewed-by: Alvaro Herrera, Kyotaro Horiguchi Discussion: https://postgr.es/m/f91de4fb-a7ab-b90e-8132-74796e049d51@oss.nttdata.com |
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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: 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/.