Hadoop Map/Reduce
  1. Hadoop Map/Reduce
  2. MAPREDUCE-3126

mr job stuck because reducers using all slots and mapper isn't scheduled

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 0.23.0
    • Component/s: mrv2
    • Labels:
      None

      Description

      The command in MAPREDUCE-3124 run and this job got hung with 1 Map task waiting for resources and 7 Reducers running (2 waiting). The mapper got scheduler, then AM scheduled the reducers, the map task failed and tried to start a new attempt but reducers were using all the slots.

      I will try to add some more info from the logs.

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          People

          • Assignee:
            Arun C Murthy
            Reporter:
            Thomas Graves
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            Dates

            • Created:
              Updated:
              Resolved:

              Development