Uploaded image for project: 'IMPALA'
  1. IMPALA
  2. IMPALA-3902 Multi-threaded query execution
  3. IMPALA-8999

Parallelise all plans, including UNION, when mt_dop > 1

    XMLWordPrintableJSON

    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: Impala 3.4.0
    • Component/s: Distributed Exec
    • Labels:
      None
    • Epic Color:
      ghx-label-10

      Description

      We should do another pass over the scheduler to make sure that the logic makes sense for mt_dop.

      There are some comments in scheduler.cc, e.g. talking about optimisations for UNION.

        Attachments

          Activity

            People

            • Assignee:
              tarmstrong Tim Armstrong
              Reporter:
              tarmstrong Tim Armstrong
            • Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: