[jira] [Created] (FLINK-21712) Extract interfaces for the Execution* (classes used by the DefaultExecutonGraph)

[Shang Yuanchun (Jira)]

Robert Metzger created FLINK-21712:
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             Summary: Extract interfaces for the Execution* (classes used by the DefaultExecutonGraph)
                 Key: FLINK-21712
                 URL: https://issues.apache.org/jira/browse/FLINK-21712
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
    Affects Versions: 1.13.0
            Reporter: Robert Metzger


This is a follow up to FLINK-21347, where we discussed in the review (https://github.com/apache/flink/pull/14950#discussion_r580963986) that it would be good to extract interfaces for the remaining Execution* classes to make testing / mocking easier.



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