Hadoop Common
  1. Hadoop Common
  2. HADOOP-4035

Modify the capacity scheduler (HADOOP-3445) to schedule tasks based on memory requirements and task trackers free memory


    • Type: Bug Bug
    • Status: Closed
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.19.0
    • Fix Version/s: 0.20.0
    • Component/s: None
    • Labels:
    • Hadoop Flags:
      Incompatible change, Reviewed
    • Release Note:
      Changed capacity scheduler policy to take note of task memory requirements and task tracker memory availability.


      HADOOP-3759 introduced configuration variables that can be used to specify memory requirements for jobs, and also modified the tasktrackers to report their free memory. The capacity scheduler in HADOOP-3445 should schedule tasks based on these parameters. A task that is scheduled on a TT that uses more than the default amount of memory per slot can be viewed as effectively using more than one slot, as it would decrease the amount of free memory on the TT by more than the default amount while it runs. The scheduler should make the used capacity account for this additional usage while enforcing limits, etc.

      1. HADOOP-4035-20081202.2.txt
        135 kB
        Hemanth Yamijala
      2. HADOOP-4035-20081202.1.txt
        135 kB
        Hemanth Yamijala
      3. HADOOP-4035-20081202.txt
        135 kB
        Vinod Kumar Vavilapalli
      4. HADOOP-4035-20081128-4.txt
        128 kB
        Vinod Kumar Vavilapalli
      5. HADOOP-4035-20081126.1.txt
        101 kB
        Vinod Kumar Vavilapalli
      6. HADOOP-4035-20081121.txt
        83 kB
        Vinod Kumar Vavilapalli
      7. HADOOP-4035-20081008.txt
        98 kB
        Vinod Kumar Vavilapalli
      8. HADOOP-4035-20081006.1.txt
        89 kB
        Vinod Kumar Vavilapalli
      9. HADOOP-4035-20081006.txt
        75 kB
        Vinod Kumar Vavilapalli
      10. HADOOP-4035-20080918.1.txt
        56 kB
        Vinod Kumar Vavilapalli
      11. 4035.1.patch
        31 kB
        Vinod Kumar Vavilapalli

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            • Assignee:
              Vinod Kumar Vavilapalli
              Hemanth Yamijala
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              • Created: