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  1. IMPALA
  2. IMPALA-3200 Replace BufferedBlockMgr with new buffer pool
  3. IMPALA-5618

Performance regresses on buffer pool dev branch for high-ndv aggregations

    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

      The extra time appears to be in AddRowCustom() via PartitionedAggregationNode::ConstructIntermediateTuple(). I think allocating the boost::function object is causing the slowdown.

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            • Assignee:
              tarmstrong Tim Armstrong
              Reporter:
              tarmstrong Tim Armstrong
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                Updated:
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