Hadoop Map/Reduce
  1. Hadoop Map/Reduce
  2. MAPREDUCE-4358

Reducers are assigned containers before all maps are assigned containers

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Duplicate
    • Affects Version/s: 2.0.0-alpha
    • Fix Version/s: None
    • Component/s: mrv2
    • Labels:
      None

      Description

      Reducers start to get containers before all maps are. We have seen this issue and it is problematic since if there is no avaialable resources for the remaining maps, the job will just stall where reducers are waiting for mappers which are unable to start because there is no containers available.

        Issue Links

          Activity

          Ahmed Radwan created issue -
          Jason Lowe made changes -
          Field Original Value New Value
          Link This issue duplicates MAPREDUCE-4299 [ MAPREDUCE-4299 ]
          Ahmed Radwan made changes -
          Status Open [ 1 ] Resolved [ 5 ]
          Resolution Duplicate [ 3 ]

            People

            • Assignee:
              Unassigned
              Reporter:
              Ahmed Radwan
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              Dates

              • Created:
                Updated:
                Resolved:

                Development