[jira] [Created] (FLINK-6667) Pass a callback type to the RestartStrategy, rather than the full ExecutionGraph

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-6667:
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             Summary: Pass a callback type to the RestartStrategy, rather than the full ExecutionGraph
                 Key: FLINK-6667
                 URL: https://issues.apache.org/jira/browse/FLINK-6667
             Project: Flink
          Issue Type: Sub-task
          Components: Distributed Coordination
    Affects Versions: 1.3.0
            Reporter: Stephan Ewen


To let the {{ResourceStrategy}} work across multiple {{FailoverStrategy}} implementations, it needs to be passed a "callback" to call to trigger the restart of tasks/regions/etc.

Such a "callback" would be a nice abstraction to use for global restarts as well, to not expose the full execution graph.

Ideally, the callback is one-shot, so it cannot accidentally be used to call restart() multiple times.

This would also make the testing of RestartStrategies much easier.



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