[jira] [Created] (FLINK-22295) Document sort-merge blocking shuffle

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-22295:
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             Summary: Document sort-merge blocking shuffle
                 Key: FLINK-22295
                 URL: https://issues.apache.org/jira/browse/FLINK-22295
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Network
    Affects Versions: 1.12.2, 1.13.0
            Reporter: Till Rohrmann
             Fix For: 1.13.0


We should document how to use the  sort-merge blocking shuffle. At the moment only the configuration options are documented. I suggest to also explain when to use this shuffle and what the benefits are.



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