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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6696

Add a configuration to limit the number of map tasks allowed per job.

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.8.0
    • Fix Version/s: 2.9.0, 3.0.0-alpha1
    • Component/s: job submission
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      Add a configuration "mapreduce.job.max.map" to limit the number of map tasks allowed per job. It will be useful for Hadoop admin to save Hadoop cluster resource by preventing users from submitting big mapreduce jobs. A mapredeuce job with too many mappers may fail with OOM after running for long time. It will be a big waste.

        Attachments

        1. MAPREDUCE-6696.000.patch
          5 kB
          zhihai xu
        2. MAPREDUCE-6696.001.patch
          5 kB
          zhihai xu
        3. MAPREDUCE-6696.002.patch
          5 kB
          zhihai xu
        4. MAPREDUCE-6696.003.patch
          5 kB
          zhihai xu
        5. MAPREDUCE-6696.004.patch
          5 kB
          zhihai xu

          Activity

            People

            • Assignee:
              zxu zhihai xu
              Reporter:
              zxu zhihai xu
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              Dates

              • Created:
                Updated:
                Resolved: