[jira] [Created] (FLINK-12068) Backtrack fail over regions if intermediate results are unavailable

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-12068:
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             Summary: Backtrack fail over regions if intermediate results are unavailable
                 Key: FLINK-12068
                 URL: https://issues.apache.org/jira/browse/FLINK-12068
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Coordination
            Reporter: Till Rohrmann


The batch failover strategy needs to be able to backtrack fail over regions if an intermediate result is unavailable. Either by explicitly checking whether the intermediate result partition is available or via a special exception indicating that a result partition is no longer available.



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