Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.21.0
    • Component/s: performance, task
    • Labels:
      None
    • Release Note:
      Hide
      Refactors shuffle code out of ReduceTask into separate classes in a new package(org.apache.hadoop.mapreduce.task.reduce)
      Incorporates MAPREDUCE-240, batches up several map output files from a TT to a reducer in a single transfer
      Introduces new Shuffle counters to keep track of shuffle errors
      Show
      Refactors shuffle code out of ReduceTask into separate classes in a new package(org.apache.hadoop.mapreduce.task.reduce) Incorporates MAPREDUCE-240 , batches up several map output files from a TT to a reducer in a single transfer Introduces new Shuffle counters to keep track of shuffle errors

      Description

      The reduce shuffle code has become very complex and entangled. I think we should move it out of ReduceTask and into a separate package (org.apache.hadoop.mapred.task.reduce). Details to follow.

      1. mapred-318-3Sep-v1.patch
        243 kB
        Jothi Padmanabhan
      2. mapred-318-3Sep.patch
        242 kB
        Jothi Padmanabhan
      3. mapred-318-24Aug.patch
        239 kB
        Jothi Padmanabhan
      4. mapred-318-20Aug.patch
        234 kB
        Jothi Padmanabhan
      5. mapred-318-common.patch
        3 kB
        Jothi Padmanabhan
      6. mapred-318-14Aug.patch
        233 kB
        Jothi Padmanabhan
      7. HADOOP-5233_part0.patch
        21 kB
        Arun C Murthy
      8. HADOOP-5233_api.patch
        12 kB
        Arun C Murthy

        Issue Links

          Activity

          Owen O'Malley created issue -
          Arun C Murthy made changes -
          Field Original Value New Value
          Attachment HADOOP-5233_api.patch [ 12400049 ]
          Arun C Murthy made changes -
          Attachment HADOOP-5233_part0.patch [ 12400093 ]
          Owen O'Malley made changes -
          Project Hadoop Common [ 12310240 ] Hadoop Map/Reduce [ 12310941 ]
          Key HADOOP-5223 MAPREDUCE-318
          Component/s mapred [ 12310690 ]
          Fix Version/s 0.21.0 [ 12313563 ]
          Jothi Padmanabhan made changes -
          Attachment mapred-318-14Aug.patch [ 12416553 ]
          Attachment mapred-318-common.patch [ 12416554 ]
          Jothi Padmanabhan made changes -
          Attachment mapred-318-20Aug.patch [ 12417146 ]
          Jothi Padmanabhan made changes -
          Attachment mapred-318-24Aug.patch [ 12417475 ]
          Jothi Padmanabhan made changes -
          Attachment mapred-318-3Sep.patch [ 12418466 ]
          Jothi Padmanabhan made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Jothi Padmanabhan made changes -
          Status Patch Available [ 10002 ] Open [ 1 ]
          Jothi Padmanabhan made changes -
          Attachment mapred-318-3Sep-v1.patch [ 12418478 ]
          Jothi Padmanabhan made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Devaraj Das made changes -
          Status Patch Available [ 10002 ] Resolved [ 5 ]
          Fix Version/s 0.21.0 [ 12314045 ]
          Resolution Fixed [ 1 ]
          Jothi Padmanabhan made changes -
          Release Note Refactors shuffle code out of ReduceTask into separate classes in a new package(org.apache.hadoop.mapreduce.task.reduce)
          Incorporates MAPREDUCE-240, batches up several map output files from a TT to a reducer in a single transfer
          Introduces new Shuffle counters to keep track of shuffle errors
          Tom White made changes -
          Status Resolved [ 5 ] Closed [ 6 ]
          Todd Lipcon made changes -
          Component/s performance [ 12316500 ]
          Component/s task [ 12312920 ]
          Todd Lipcon made changes -
          Link This issue incorporates MAPREDUCE-268 [ MAPREDUCE-268 ]

            People

            • Assignee:
              Owen O'Malley
              Reporter:
              Owen O'Malley
            • Votes:
              0 Vote for this issue
              Watchers:
              34 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development