Details

    • Type: New Feature New Feature
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      It should be possible to specify a limit to the number of tasks per job permitted to run simultaneously. If, for example, you have a cluster of 50 nodes, with 100 map task slots and 100 reduce task slots, and the configured limit is 25 simultaneous tasks/job, then four or more jobs will be able to run at a time. This will permit short jobs to pass longer-running jobs. This also avoids some problems we've seen with HOD, where nodes are underutilized in their tail, and it should permit improved input locality.

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            • Assignee:
              Unassigned
              Reporter:
              Doug Cutting
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              • Created:
                Updated:
                Resolved:

                Development