Till Rohrmann created FLINK-10505:
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             Summary: Treat fail signal as scheduling event
                 Key: FLINK-10505
                 URL: https://issues.apache.org/jira/browse/FLINK-10505
             Project: Flink
          Issue Type: Sub-task
          Components: Distributed Coordination
    Affects Versions: 1.7.0
            Reporter: Till Rohrmann
             Fix For: 1.7.0


Instead of simply calling into the {{RestartStrategy}} which restarts the 
existing {{ExecutionGraph}} with the same parallelism, the 
{{ExecutionGraphDriver}} should treat a recovery similar to the initial 
scheduling operation. First, one needs to decide on the new parallelism of the 
{{ExecutionGraph}} (scale up/scale down) wrt to the available set of resources. 
Only if the minimum configuration is fulfilled, the potentially rescaled 
{{ExecutionGraph}} will be restarted.




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