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The apply worker tracked the final LSN of the remote transaction being applied in a separate global variable remote_final_lsn, even though apply_error_callback_arg already tracked the same transaction's xid and finish LSN for error context reporting, and both were updated together at the same places. Rename ApplyErrorCallbackArg to ApplyRemoteCtx and treat its remote_xid/finish_lsn pair as the generic descriptor of the remote transaction currently being applied, replacing all uses of remote_final_lsn so the redundant global can be removed. There is no behavior change. Recording the remote transaction being applied in a single place should also help the proposed conflict log table patch, which needs the same information when logging a conflict. Author: Zhijie Hou <houzj.fnst@fujitsu.com> Author: Amit Kapila <amit.kapila16@gmail.com> Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com> Reviewed-by: shveta malik <shveta.malik@gmail.com> Reviewed-by: Dilip Kumar <dilipbalaut@gmail.com> Discussion: https://postgr.es/m/TY4PR01MB177186ED4D38C5356294CC51C94A42@TY4PR01MB17718.jpnprd01.prod.outlook.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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.