Hadoop Common
  1. Hadoop Common
  2. HADOOP-5726

Remove pre-emption from the capacity scheduler code base

    Details

    • Type: Improvement Improvement
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.20.1
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Incompatible change, Reviewed
    • Release Note:
      Hide
      Removed pre-emption from capacity scheduler. The impact of this change is that capacities for queues can no longer be guaranteed within a given span of time. Also changed configuration variables to remove pre-emption related variables and better reflect the absence of guarantees.
      Show
      Removed pre-emption from capacity scheduler. The impact of this change is that capacities for queues can no longer be guaranteed within a given span of time. Also changed configuration variables to remove pre-emption related variables and better reflect the absence of guarantees.

      Description

      In an effort to simplify the code base, we would like to remove the pre-emption related code in the capacity scheduler. We would reintroduce this (possibly with some revisions to the original design) after a while. This will be an incompatible change. Any objections ?

        Issue Links

          Activity

          Hemanth Yamijala created issue -
          rahul k singh made changes -
          Field Original Value New Value
          Attachment cs-without-preemption-23-1-2009.patch [ 12406210 ]
          Sreekanth Ramakrishnan made changes -
          Link This issue blocks HADOOP-5736 [ HADOOP-5736 ]
          rahul k singh made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Hemanth Yamijala made changes -
          Status Patch Available [ 10002 ] Resolved [ 5 ]
          Hadoop Flags [Incompatible change, Reviewed]
          Release Note Removed pre-emption from capacity scheduler. The impact of this change is that capacities for queues can no longer be guaranteed within a given span of time. Also changed configuration variables to remove pre-emption related variables and better reflect the absence of guarantees.
          Fix Version/s 0.20.1 [ 12313866 ]
          Resolution Fixed [ 1 ]
          Owen O'Malley made changes -
          Component/s contrib/capacity-sched [ 12312466 ]

            People

            • Assignee:
              rahul k singh
              Reporter:
              Hemanth Yamijala
            • Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development