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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/06/22 10:48:42 UTC

[GitHub] [flink] zhuzhurk commented on pull request #20043: [FLINK-28193][runtime] Enable to identify whether a job vertex contains source/sink operators

zhuzhurk commented on PR #20043:
URL: https://github.com/apache/flink/pull/20043#issuecomment-1162944440

   > Could you not infer this from the size of `inputs`/`results` in the `JobVertex`?
   
   A job vertex with no input/output does not mean it is a true source/sink vertex. 
   - Multi-input sources can have input
   - It's possible that the vertex with no output edge does not contain any sink operator
   - A new sink with topology can spread the sink logic into multiple job vertices connected with job edges.


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