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Type:
Sub-task
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: Impala 2.10.0
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Fix Version/s: Impala 2.10.0
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Component/s: Backend
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Labels:
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Target Version:
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Epic Color:ghx-label-4
In a test run executing a very large join I saw a lot of CPU being burnt in BufferedTupleStreamV2::AdvanceWritePage()
It looks like it's all being spent iterating over the pages_ linked list. list::size() is an O operation in some implementations.