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  1. IMPALA
  2. IMPALA-3393

Report thread wake up interval is not well distributed

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: Impala 2.5.0
    • Fix Version/s: None
    • Component/s: Backend
    • Labels:
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      Description

      https://github.com/cloudera/Impala/blob/cdh5-trunk/be/src/runtime/plan-fragment-executor.cc#L398

      We take an integer from 0 to 4. so if there are 200 nodes then ~40 of them will report at the same time every 5 seconds. This does not take into account fragment start time is basically random...

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            • Assignee:
              Unassigned
              Reporter:
              HuaisiXu Huaisi Xu
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              Dates

              • Created:
                Updated: