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4220e06f4c
pg_waldump --stats=record identifies a record by a combination of the RmgrId and the four bits of the xl_info field of the record. But XACT records use the first bit of those four bits for an optional flag variable, and the following three bits for the opcode to identify a record. So previously the same type of XACT record could have different four bits (three bits are the same but the first one bit is different), and which could cause pg_waldump --stats=record to show two lines of per-record statistics for the same XACT record. This is a bug. This commit changes pg_waldump --stats=record so that it processes only XACT record differently, i.e., filters the opcode out of xl_info and uses a combination of the RmgrId and those three bits as the identifier of a record, only for XACT record. For other records, the four bits of the xl_info field are still used. Back-patch to all supported branches. Author: Kyotaro Horiguchi Reviewed-by: Shinya Kato, Fujii Masao Discussion: https://postgr.es/m/2020100913412132258847@highgo.ca |
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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/.