[IMPALA-13054] EnqueueCompletedQuery very slow on deeply nested plans

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: Impala 4.4.0
• Component/s: Backend
• Epic Link: Workload Management
• Epic Color: ghx-label-7
• Assignee: Michael Smith
• Reporter: Michael Smith
• Created: 02/May/24 21:53
• Updated: 14/May/24 17:03
• Resolved: 07/May/24 16:47

Description

When running deeply nested queries - such as those in tests/query_test/test_nested_types.py::TestMaxNestingDepth::test_max_nesting_depth - with query logging enabled, the UnregisterQuery queue gets backed up due to very slow execution of EnqueueCompletedQuery.