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  1. IMPALA
  2. IMPALA-3902 Multi-threaded query execution
  3. IMPALA-9027

Update planner decisions to factor in mt_dop

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: Impala 3.4.0
    • Component/s: Frontend
    • Labels:
      None
    • Epic Color:
      ghx-label-5

      Description

      We need to make sure all decisions in the planner that currently use number of nodes use number of instances if appropriate.

      E.g.

      • HashJoinNode.computeNodeResourceProfile() has a TODO.
      • I think the broadcast/shuffle decision doesn't take into account mt_dop, which is wrong if we're broadcasting to multiple instances per fragment.

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