Hadoop Common
  1. Hadoop Common
  2. HADOOP-1276

TaskTracker expiry interval is not configurable

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.13.0
    • Component/s: None
    • Labels:
      None
    • Environment:

      all

      Description

      The tasktracker expiry interval is hardcoded to 10 mins with the MRConstants.TASKTRACKER_EXPIRY_INTERVAL constant.

      For small clusters, running small jobs, this interval is too high.

      Making it configurable it would require:

      • Introducing a 'tasktracker.expiry.interval' property with default value of 10 mins.
      • Load the property in the JobTracker
      • Change the 5 usages of the constant by a property in the JobTracker
      • Remove the constant from MRConstants
      • add default value to the hadoop-default.xml file

        Activity

        Alejandro Abdelnur created issue -
        Alejandro Abdelnur made changes -
        Field Original Value New Value
        Priority Minor [ 4 ] Major [ 3 ]
        Arun C Murthy made changes -
        Assignee Arun C Murthy [ acmurthy ]
        Arun C Murthy made changes -
        Attachment HADOOP-1276_20070504_1.patch [ 12356754 ]
        Arun C Murthy made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Arun C Murthy made changes -
        Comment [ Here is a straight-forward patch...

        Personally I find this feature quite useful, especially when dealing with issues relating to lost trackers... I'm not very sure about the original constraints which led to this being hard-coded and to acquiesce to the same. ]
        Doug Cutting made changes -
        Resolution Fixed [ 1 ]
        Status Patch Available [ 10002 ] Resolved [ 5 ]
        Doug Cutting made changes -
        Status Resolved [ 5 ] Closed [ 6 ]
        Owen O'Malley made changes -
        Component/s mapred [ 12310690 ]

          People

          • Assignee:
            Arun C Murthy
            Reporter:
            Alejandro Abdelnur
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            Watchers:
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            Dates

            • Created:
              Updated:
              Resolved:

              Development