Till Rohrmann created FLINK-4046:
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             Summary: Failing a restarting job can get stuck in 
JobStatus.FAILING
                 Key: FLINK-4046
                 URL: https://issues.apache.org/jira/browse/FLINK-4046
             Project: Flink
          Issue Type: Bug
          Components: Distributed Runtime
    Affects Versions: 1.1.0
            Reporter: Till Rohrmann
             Fix For: 1.1.0


When a job is in state {{RESTARTING}}, then it can happen that all of its 
{{ExecutionJobVertices}} are in a final state (if they have not been reset). 
When calling {{fail}} on this {{ExecutionGraph}} will transition the state to 
{{FAILING}} and call cancel on all {{ExecutionJobVertices}}. The job state 
{{FAILING}} can only be left iff all {{ExecutionJobVertices}} have reached a 
final state. The notification of this final state is only sent to the 
{{ExecutionGraph}} when all subtasks of an {{ExecutionJobVertex}} have 
transitioned to a final state. However, this won't happen because the 
{{ExeuctionJobVertices}} are already in a final state. The result is that a job 
can get stuck in the state {{FAILING}} if {{fail}} is called on a 
{{RESTARTING}} job.

I propose to add a direct transition from {{RESTARTING}} to {{FAILED}} as it is 
the case for the {{cancel}} call (transition from {{RESTARTING}} to 
{{CANCELED}}).



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