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https://issues.apache.org/jira/browse/FLINK-4794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15564802#comment-15564802
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Chesnay Schepler commented on FLINK-4794:
-----------------------------------------
This is intended, assuming the appropriate java exception is thrown. The error
message would be helpful.
There is no partition_by_hash function without parameters in the java & scala
counterparts, if you don't pass a parameter they will throw an exception. And
this is good; just picking an (effectively arbitrary) field will in many cases
lead to bad behavior.
> 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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