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  1. IMPALA
  2. IMPALA-3902

Multi-threaded query execution

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    Details

    • Type: Epic
    • Status: Reopened
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: Impala 2.6.0
    • Fix Version/s: None
    • Component/s: Backend
    • Labels:
    • Epic Name:
      Impala Multi-threaded query execution

      Description

      Currently, a single query fragment is run in a quasi-single threaded manner on a node: the scanners are run in multiple threads, but all other operators (joins, aggregation) are run in the main thread.

      The goal is to add multi-threaded execution on a single node by running multiple fragment instances (each of which runs in a single thread).

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              • Assignee:
                tarmstrong Tim Armstrong
                Reporter:
                marcelk Marcel Kinard
              • Votes:
                4 Vote for this issue
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                34 Start watching this issue

                Dates

                • Created:
                  Updated: