[jira] [Created] (FLINK-13867) Write file only once when doing blocking broadcast shuffle

[Shang Yuanchun (Jira)]

Kurt Young created FLINK-13867:
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             Summary: Write file only once when doing blocking broadcast shuffle
                 Key: FLINK-13867
                 URL: https://issues.apache.org/jira/browse/FLINK-13867
             Project: Flink
          Issue Type: New Feature
          Components: Runtime / Network
            Reporter: Kurt Young


When doing broadcast shuffle in BATCH/BLOCKING fashion, the producer can only write one copy of output data for all possible consumers, instead of writing one copy of data for each consumer. 



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