[jira] [Created] (FLINK-8257) Unify the value checks for setParallelism()

[Shang Yuanchun (Jira)]

Xingcan Cui created FLINK-8257:
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             Summary: Unify the value checks for setParallelism()
                 Key: FLINK-8257
                 URL: https://issues.apache.org/jira/browse/FLINK-8257
             Project: Flink
          Issue Type: Improvement
          Components: Configuration
            Reporter: Xingcan Cui


The {{setParallelism()}} method exist in many components from different levels. Some of them require the input value to be greater than 1 (e.g., ), while some of also allow the value to be (e.g., {{DataSink.setParallelism()}})



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