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  1. Hadoop YARN
  2. YARN-397 RM Scheduler api enhancements
  3. YARN-624

Support gang scheduling in the AM RM protocol

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    • Sub-task
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 2.0.4-alpha
    • None
    • api, scheduler
    • None

    Description

      Per discussion on YARN-392 and elsewhere, gang scheduling, in which a scheduler runs a set of tasks when they can all be run at the same time, would be a useful feature for YARN schedulers to support.

      Currently, AMs can approximate this by holding on to containers until they get all the ones they need. However, this lends itself to deadlocks when different AMs are waiting on the same containers.

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              sandyr Sandy Ryza
              sandyr Sandy Ryza
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                Created:
                Updated: