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  1. Hadoop YARN
  2. YARN-3091 [Umbrella] Improve and fix locks of RM scheduler
  3. YARN-3487

CapacityScheduler scheduler lock obtained unnecessarily when calling getQueue

    Details

    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      Recently saw a significant slowdown of applications on a large cluster, and we noticed there were a large number of blocked threads on the RM. Most of the blocked threads were waiting for the CapacityScheduler lock while calling getQueueInfo.

        Attachments

        1. YARN-3487.001.patch
          1 kB
          Jason Lowe
        2. YARN-3487.002.patch
          2 kB
          Jason Lowe
        3. YARN-3487.003.patch
          1 kB
          Jason Lowe

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            • Assignee:
              jlowe Jason Lowe
              Reporter:
              jlowe Jason Lowe
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              Dates

              • Created:
                Updated:
                Resolved: