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From "Mariia Mykhailova (JIRA)" <j...@apache.org>
Subject [jira] [Created] (REEF-1648) Allow transition from ALLOCATED to RUNNING in EvaluatorState
Date Sat, 22 Oct 2016 00:32:58 GMT
Mariia Mykhailova created REEF-1648:
---------------------------------------

             Summary: Allow transition from ALLOCATED to RUNNING in EvaluatorState
                 Key: REEF-1648
                 URL: https://issues.apache.org/jira/browse/REEF-1648
             Project: REEF
          Issue Type: Bug
          Components: REEF-Common
            Reporter: Mariia Mykhailova
            Assignee: Mariia Mykhailova
            Priority: Critical


In REEF-62 we introduced state transition checks, which were refactored several times. However,
these checks don't cover all allowed scenarios. In driver restart scenario restarted driver
initially has all evaluators in `ALLOCATED` state, and when evaluators from first run reconnect
to driver, they report they are in `RUNNING` state, so driver refuses to recognize them. 

We need to allow this transition for the restarted driver to recognize reconnecting evaluators.



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