Uploaded image for project: 'Hadoop Map/Reduce'
  1. Hadoop Map/Reduce
  2. MAPREDUCE-1184

mapred.reduce.slowstart.completed.maps is too low by default

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.20.1, 0.20.2
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      By default, this value is set to 5%. I believe for most real world situations the code isn't efficient enough to be set this low. This should be higher, probably around the 50% mark, especially given the predominance of non-FIFO schedulers.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                aw Allen Wittenauer
              • Votes:
                0 Vote for this issue
                Watchers:
                11 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: