[jira] [Created] (FLINK-28193) Enable to identify whether a job vertex contains source/sink operators

["Zhu Zhu (Jira)" <ji...@apache.org>]

Zhu Zhu created FLINK-28193:
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             Summary: Enable to identify whether a job vertex contains source/sink operators
                 Key: FLINK-28193
                 URL: https://issues.apache.org/jira/browse/FLINK-28193
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Coordination
            Reporter: Zhu Zhu
             Fix For: 1.16.0


Speculative execution does not support sources/sinks in the first version. Therefore, it will not create speculation instances for vertices which contains source/sink operators.

Note that a job vertex with no input/output does not mean it is a source/sink vertex. Multi-input sources can have input. And it's possible that the vertex with no output edge does not contain any sink operator. Besides that, a new sink with topology can spread the sink logic into multiple job vertices connected with job edges.



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