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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3784

maxActiveApplications(|PerUser) per queue is too low for small clusters

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 0.23.1
    • Component/s: mrv2
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed
    • Release Note:
      Fixed CapacityScheduler so that maxActiveApplication and maxActiveApplicationsPerUser per queue are not too low for small clusters.

      Description

      We ran into this issue while testing on small clusters.
      On a 7node cluster with 8G per node, for a queue with absolute capacity 30%, user limit 100%, maxActiveApplications and maxActiveApplicationsPerUser is calculated to be 1.
      This means that even though the queue has 17GB(0.3*8*7), only 1 user can run 1 app at a given time queuing up rest of the apps/users. This hurts performance on small clusters.

        Attachments

        1. MAPREDUCE-3784.patch
          10 kB
          Arun C Murthy
        2. MAPREDUCE-3784.patch
          10 kB
          Arun C Murthy
        3. MAPREDUCE-3784.patch
          10 kB
          Arun C Murthy
        4. MAPREDUCE-3784.patch
          7 kB
          Arun C Murthy
        5. MAPREDUCE-3784.patch
          6 kB
          Arun C Murthy

          Activity

            People

            • Assignee:
              acmurthy Arun C Murthy
              Reporter:
              rramya Ramya Sunil
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              Dates

              • Created:
                Updated:
                Resolved: