[jira] [Created] (FLINK-13871) Consolidate isRunning, canceled, isFinished fields in StreamTask and SourceStreamTask

[Shang Yuanchun (Jira)]

Alex created FLINK-13871:
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             Summary: Consolidate isRunning, canceled, isFinished fields in StreamTask and SourceStreamTask
                 Key: FLINK-13871
                 URL: https://issues.apache.org/jira/browse/FLINK-13871
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Task
            Reporter: Alex


{{StreamTask}} has two {{volatile boolean}} fields ({{canceled}}, {{isFinished}})
and {{SourceStreamTask}} has an additional {{isFinished}} field.

In practice, those fields are mutually exclusive and reflect different stages of stream task's lifecycle. It should be possible to represent all three fields as one (enumerated) state field.



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