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  1. Hadoop Map/Reduce
  2. MAPREDUCE-4358

Reducers are assigned containers before all maps are assigned containers

    Details

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

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              • Assignee:
                Unassigned
                Reporter:
                ahmed.radwan Ahmed Radwan
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                • Created:
                  Updated:
                  Resolved: