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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3902

MR AM should reuse containers for map tasks, there-by allowing fine-grained control on num-maps for users without need for CombineFileInputFormat etc.

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • applicationmaster, mrv2
    • None

    Description

      The MR AM is now in a great position to reuse containers across (map) tasks. This is something similar to JVM re-use we had in 0.20.x, but in a significantly better manner:

      1. Consider data-locality when re-using containers
      2. Consider the new shuffle - ensure that reduces fetch output of the whole container at once (i.e. all maps) : MAPREDUCE-4525

      Attachments

        1. AM_ContainerRefactor.pdf
          151 kB
          Siddharth Seth
        2. AMContainerRefactorNotes.pdf
          58 kB
          Siddharth Seth
        3. MAPREDUCE-3902.2.patch
          55 kB
          Tsuyoshi Ozawa
        4. MAPREDUCE-3902.patch
          74 kB
          Arun Murthy

        Issue Links

        is blocked by

        Bug - A problem which impairs or prevents the functions of the product. YARN-75 RMContainer should handle a RELEASE event while RUNNING

        • Major - Major loss of function.
        • Closed
        is related to

        Sub-task - The sub-task of the issue MAPREDUCE-4525 Combiner per node

        • Major - Major loss of function.
        • Open
        relates to

        Task - A task that needs to be done. MAPREDUCE-4596 Split StateMachine state from states seen by MRClientProtocol (for Job, Task, TaskAttempt)

        • Major - Major loss of function.
        • Closed
        1.
        		 [MAPREDUCE-3902] TaskHeartbeatHandler should extends HeartbeatHandlerBase Sub-task Resolved Tsuyoshi Ozawa Actions
        2.
        		 [MAPREDUCE-3902] ScheduledRequests#remove should remove the elements from mapsHostMapping and mapsRackMapping Sub-task Open Tsuyoshi Ozawa Actions
        3.
        		 [MAPREDUCE-3902] Ensure not to launch container on blacklisted hosts Sub-task Resolved Tsuyoshi Ozawa Actions
        4.
        		 [MAPREDUCE-3902] Re-create ask list correctly in case of a temporary error in the AM-RM allocate call Sub-task Resolved Siddharth Seth Actions
        5.
        		 [MAPREDUCE-3902] RMContainerAllocator#scheduleInterval should be configurable Sub-task Resolved Tsuyoshi Ozawa Actions
        6.
        		 [MAPREDUCE-3902] RMContainerAllocator#assign should be split into functions Sub-task Open Tsuyoshi Ozawa Actions
        7.
        		 [MAPREDUCE-3902] Re-wire AM Recovery Sub-task Resolved Siddharth Seth Actions
        8.
        		 [MAPREDUCE-3902] Re-wire LocalContainerAllocator / UberAM Sub-task Resolved Siddharth Seth Actions
        9.
        		 [MAPREDUCE-3902] Change AMContainerMap to extend AbstractService Sub-task Resolved Tsuyoshi Ozawa Actions
        10.
        		 [MAPREDUCE-3902] RMContainerAllocator should factor in nodes being blacklisted Sub-task Resolved Siddharth Seth Actions
        11.
        		 [MAPREDUCE-3902] Disable AM blacklisting if #blacklistedNodes crosses the configured threshold Sub-task Resolved Siddharth Seth Actions
        12.
        		 [MAPREDUCE-3902] Unit tests for AMContainer Sub-task Open Unassigned Actions
        13.
        		 [MAPREDUCE-3902] Unit tests for AMNode Sub-task Open Unassigned Actions
        14.
        		 [MAPREDUCE-3902] Reduce scheduling fixes, factor in MR-4437 Sub-task Resolved Siddharth Seth Actions
        15.
        		 [MAPREDUCE-3902] Statistics logging in the AM scheduler Sub-task Resolved Siddharth Seth Actions
        16.
        		 [MAPREDUCE-3902] Fix and re-enable RMContaienrAllocator unit tests Sub-task Resolved Siddharth Seth Actions
        17.
        		 [MAPREDUCE-3902] Handle the JobFinishedEvent correctly Sub-task Open Siddharth Seth Actions
        18.
        		 [MAPREDUCE-3902] Container Launch should be independent of o.a.h.m.Task Sub-task Resolved Siddharth Seth Actions
        19.
        		 [MAPREDUCE-3902] ContainerHeartbeatHandler should be pinged on a getTask call Sub-task Resolved Siddharth Seth Actions
        20.
        		 [MAPREDUCE-3902] Use the configured shuffle port and application ACLs Sub-task Resolved Siddharth Seth Actions
        21.
        		 [MAPREDUCE-3902] Handle a successful NM stop request Sub-task Resolved Siddharth Seth Actions
        22.
        		 [MAPREDUCE-3902] re-enable disabled unit tests in mr-client-app2 module Sub-task Open Siddharth Seth Actions

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          People

            rkannan82 Kannan Rajah
            acmurthy Arun Murthy
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            Dates

              Created:
              Updated:

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