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Ignore parallel workers in pg_stat_statements Oversight in 4f0b0966c8 which exposed queryid in parallel workers. Counters are aggregated by the main backend process so parallel workers would report duplicated activity, and could also report activity for the wrong entry as they are only aware of the top level queryid. Fix thinko in pg_stat_get_activity when retrieving the queryid. Remove unnecessary call to pgstat_report_queryid(). Reported-by: Amit Kapila, Andres Freund, Thomas Munro Discussion: https://postgr.es/m/20210408051735.lfbdzun5zdlax5gd@alap3.anarazel.de p634GTSOqnDW86Owrn6qDAVosC5dJjXjp7BMfc5Gz1Q@mail.gmail.com Author: Julien Rouhaud
The PostgreSQL contrib tree --------------------------- This subtree contains porting tools, analysis utilities, and plug-in features that are not part of the core PostgreSQL system, mainly because they address a limited audience or are too experimental to be part of the main source tree. This does not preclude their usefulness. User documentation for each module appears in the main SGML documentation. When building from the source distribution, these modules are not built automatically, unless you build the "world" target. You can also build and install them all by running "make all" and "make install" in this directory; or to build and install just one selected module, do the same in that module's subdirectory. Some directories supply new user-defined functions, operators, or types. To make use of one of these modules, after you have installed the code you need to register the new SQL objects in the database system by executing a CREATE EXTENSION command. In a fresh database, you can simply do CREATE EXTENSION module_name; See the PostgreSQL documentation for more information about this procedure.