3256722d7b
Prior to this commit, the docs for enable_partitionwise_aggregate and enable_partitionwise_join mentioned the additional overheads enabling these causes for the query planner, but they mentioned nothing about the possible surge in work_mem-consuming executor nodes that could end up in the final plan. Dimitrios reported the OOM killer intervened on his query as a result of using enable_partitionwise_aggregate=on. Here we adjust the docs to mention the possible increase in the number of work_mem-consuming executor nodes that can appear in the final plan as a result of enabling these GUCs. Reported-by: Dimitrios Apostolou Reviewed-by: Ashutosh Bapat Discussion: https://postgr.es/m/3603c380-d094-136e-e333-610914fb3e80%40gmx.net Discussion: https://postgr.es/m/CAApHDvoZ0_yqwPFEpb6h261L76BUpmh5GxBQq0LeRzQ5Jh3zzg@mail.gmail.com Backpatch-through: 12, oldest supported version
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/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/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/.