Hadoop Common
  1. Hadoop Common
  2. HADOOP-3350

distcp should permit users to limit the number of maps

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.18.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      distcp provides no user-configurable setting to affect the number of maps run during a copy. For large clusters, the current calculation- min(#bytes / 256MB, #nodes * 20)- can be overly aggressive.

      1. 3350-0.patch
        2 kB
        Chris Douglas
      2. 3350-1.patch
        6 kB
        Chris Douglas

        Activity

        Nigel Daley made changes -
        Status Resolved [ 5 ] Closed [ 6 ]
        Chris Douglas made changes -
        Status Patch Available [ 10002 ] Resolved [ 5 ]
        Resolution Fixed [ 1 ]
        Hadoop Flags [Reviewed]
        Chris Douglas made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Chris Douglas made changes -
        Attachment 3350-1.patch [ 12381797 ]
        Owen O'Malley made changes -
        Status Patch Available [ 10002 ] Open [ 1 ]
        Owen O'Malley made changes -
        Assignee Chris Douglas [ chris.douglas ]
        Chris Douglas made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Chris Douglas made changes -
        Field Original Value New Value
        Attachment 3350-0.patch [ 12381473 ]
        Chris Douglas created issue -

          People

          • Assignee:
            Chris Douglas
            Reporter:
            Chris Douglas
          • Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development