[jira] [Commented] (PIG-4696) Empty map returned by a streaming_python udf wrongly contains a null key

["Rohini Palaniswamy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-4696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14947478#comment-14947478 ] 

Rohini Palaniswamy commented on PIG-4696:
-----------------------------------------

+1

> Empty map returned by a streaming_python udf wrongly contains a null key
> ------------------------------------------------------------------------
>
>                 Key: PIG-4696
>                 URL: https://issues.apache.org/jira/browse/PIG-4696
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.15.0
>            Reporter: Cheolsoo Park
>            Assignee: Cheolsoo Park
>            Priority: Minor
>         Attachments: PIG-4696.1.patch
>
>
> To reproduce, please run the following query-
> {code}
> b = FOREACH a GENERATE (map[])udfs.empty_dict();
> DUMP b;
> {code}
> where empty_dict() is a Python udf-
> {code}
> @outputSchema("map_out: []")
> def empty_dict():
>     return {}
> {code}
> This returns {{([])}} in jython while {{(\[null#\])}} in streaming_python.



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