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  1. IMPALA
  2. IMPALA-8965 Cleanup after switch to multi-threaded query execution
  3. IMPALA-9020

Move scan range queues to fragment-level and do dynamic scheduling within a node

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    • Type: Sub-task
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Backend
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      Description

      It would be nice to dynamically load balance scans between finstances on a node. There's no particular reason why we can't do that - the code is already set up, in HDFS, to pull scan ranges out of a queue.

      I think this will be simpler to do once we don't have to support the "old" multithreaded scans, so I'm including this in later cleanup.

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