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  1. Hadoop YARN
  2. YARN-8789

Add BoundedQueue to AsyncDispatcher



    • Type: Improvement
    • Status: Patch Available
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 3.2.0
    • Fix Version/s: None
    • Component/s: applications
    • Labels:
    • Flags:


      I recently came across a scenario where an MR ApplicationMaster was failing with an OOM exception. It had many thousands of Mappers and thousands of Reducers. It was noted that in the logging that the event-queue of AsyncDispatcher had a very large number of item in it and was seemingly never decreasing.

      I started looking at the code and thought it could use some clean up, simplification, and the ability to specify a bounded queue so that any incoming events are throttled until they can be processed. This will protect the ApplicationMaster from a flood of events.

      Logging Message:
      Size of event-queue is xxx


        1. YARN-8789.1.patch
          34 kB
          David Mollitor
        2. YARN-8789.10.patch
          167 kB
          David Mollitor
        3. YARN-8789.12.patch
          167 kB
          David Mollitor
        4. YARN-8789.14.patch
          167 kB
          David Mollitor
        5. YARN-8789.2.patch
          36 kB
          David Mollitor
        6. YARN-8789.3.patch
          37 kB
          David Mollitor
        7. YARN-8789.4.patch
          44 kB
          David Mollitor
        8. YARN-8789.5.patch
          45 kB
          David Mollitor
        9. YARN-8789.6.patch
          45 kB
          David Mollitor
        10. YARN-8789.7.patch
          48 kB
          David Mollitor
        11. YARN-8789.7.patch
          48 kB
          David Mollitor
        12. YARN-8789.8.patch
          47 kB
          David Mollitor
        13. YARN-8789.9.patch
          53 kB
          David Mollitor



            • Assignee:
              belugabehr David Mollitor
              belugabehr David Mollitor
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