Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: Impala 2.10.0
    • Fix Version/s: Impala 2.10.0
    • Component/s: Backend
    • Labels:

      Description

      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.

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            • Assignee:
              tarmstrong Tim Armstrong
              Reporter:
              tarmstrong Tim Armstrong
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