[jira] [Created] (FLINK-4794) partition_by_hash() crashes if no parameter is provided

[Shang Yuanchun (Jira)]

Yakov Goldberg created FLINK-4794:
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             Summary: partition_by_hash() crashes if no parameter is provided
                 Key: FLINK-4794
                 URL: https://issues.apache.org/jira/browse/FLINK-4794
             Project: Flink
          Issue Type: Bug
          Components: Python API
            Reporter: Yakov Goldberg


partition_by_hash() crashes if no parameter is provided.
Looks like a line of code was missed, check distinct()

def distinct(self, *fields):
        f = None
        if len(fields) == 0:
            f = lambda x: (x,)
            fields = (0,)



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