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Fix the missing accumulation of "Heap Blocks" from parallel query workers to the leader, causing EXPLAIN (ANALYZE) to only show the leader statistics, significantly undercounting the true value. Additionally, add a regression test covering EXPLAIN (ANALYZE) of a Parallel Bitmap Heap Scan, which previously was not tested at all. Author: Lukas Fittl <lukas@fittl.com> Reviewed-by: Discussion
The functions dealing with copying back parallel worker instrumentation such as ExecIndexOnlyScanRetrieveInstrumentation were not exercised at all in the regression tests, leading to a gap in coverage. Add a query that verifies we correctly copy back "Index Searches" for EXPLAIN ANALYZE of a Parallel Index Only Scan. Reported-by: Andres Freund <andres@anarazel.de> Author: Lukas Fittl <lukas@fittl.com> Discussion:
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