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  1. IMPALA
  2. IMPALA-3902

Multi-threaded query execution

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Details

    • Epic
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • Impala 2.6.0
    • Impala 4.0.0
    • Backend
    • 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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              tarmstrong Tim Armstrong
              marcelk Marcel Kinard
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                Created:
                Updated:
                Resolved: