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  1. Aurora
  2. AURORA-1431

Slave reservation is too restrictive

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.10.0
    • Component/s: Scheduler
    • Labels:
      None
    • Sprint:
      Twitter Aurora Q2'15 Sprint 9
    • Story Points:
      3

      Description

      This is a regression introduced in https://reviews.apache.org/r/37001/. The updated TaskAssigner logic looks for an exclusive task->slave match any time a slave reservation is present. Any time scheduling fails and a slave reservation is created by the preemptor a task group gets effectively locked into the reserved slave. Given that reverse slave->task relationship is no longer enforced, a reserved slave could be taken by some other task thus slowing down scheduling progress.

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            • Assignee:
              maximk Maxim Khutornenko
              Reporter:
              maximk Maxim Khutornenko
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              Dates

              • Created:
                Updated:
                Resolved: