[jira] [Created] (FLINK-3694) Document stoppable function interface for custom sources

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-3694:
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             Summary: Document stoppable function interface for custom sources
                 Key: FLINK-3694
                 URL: https://issues.apache.org/jira/browse/FLINK-3694
             Project: Flink
          Issue Type: Improvement
          Components: DataStream API
    Affects Versions: 1.0.0, 1.1.0
            Reporter: Till Rohrmann
            Priority: Minor


With Flink 1.0 we have introduced the {{StoppableFunction}} which allows to define stoppable sources for the {{DataStream}} API. This feature is not documented yet. I think we should add a section about custom sources which also explains the usage of the {{StoppableFunction}} interface.



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