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Posted to dev@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2016/12/14 14:26:58 UTC

[jira] [Created] (FLINK-5338) Make printing sinks non-parallel

Stephan Ewen created FLINK-5338:
-----------------------------------

             Summary: Make printing sinks non-parallel
                 Key: FLINK-5338
                 URL: https://issues.apache.org/jira/browse/FLINK-5338
             Project: Flink
          Issue Type: Sub-task
          Components: Streaming
            Reporter: Stephan Ewen
            Priority: Minor
             Fix For: 2.0.0


This is a suggestion, up for discussion.

I suggest to make the {{DataStream::pring()}} sink function inherently non-parallel, i.e., always executed in a single parallel sink.

Since printing is only for toy setups anyways, and the performance is usually bound by the stdout stream, non-parallel prints should be sufficient.



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