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David Rowley 5eea78af2d Doc: mention executor memory usage for enable_partitionwise* GUCs ... 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		1 year ago
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src	Doc: mention executor memory usage for enable_partitionwise* GUCs	1 year ago
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