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  1. HPCC
  2. HPCC-22950

Add the concept of blocked time

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 7.8.0
    • Component/s: JLib, Thor

      Description

      A compound grouped aggregate with highly skewed input will not show any skew in the processing time.  That is because the time that it has spent blocked waiting for the rows from the other nodes is not recorded separately.  There should be the idea of the amount of time spent blocked in an activity (within nextRow) which is then subtracted off the local execute time (but also reported separately.)

       

      Shamser Ahmed

       

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            • Assignee:
              shamser Shamser Ahmed
              Reporter:
              ghalliday Gavin Halliday
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              • Created:
                Updated:
                Resolved: