[jira] [Commented] (PIG-5153) Change of behavior in FLATTEN(map)

["Koji Noguchi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-5153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15879313#comment-15879313 ] 

Koji Noguchi commented on PIG-5153:
-----------------------------------

Before, I believe it was just no-op for FLATTEN(map). 

Given this is a change in behavior, can [~daijy]/[~rohini] +1 for keeping the new behavior?  

Then, I think the only thing to do is, 
* Modify testcase
* Move CHANGES.txt for PIG-5085 to INCOMPATIBLE CHANGES and also set the flag on the jira.


> Change of behavior in FLATTEN(map)
> ----------------------------------
>
>                 Key: PIG-5153
>                 URL: https://issues.apache.org/jira/browse/PIG-5153
>             Project: Pig
>          Issue Type: Test
>            Reporter: Koji Noguchi
>            Priority: Minor
>
> In PIG-5085 we changed the behavior of FLATTEN on map.  
> (I didn't even know this was even allowed until I saw the following test failure.)
> e2e nightly FOREACH_6 started failing after this change.
> {code}
>             'num' => 6,
>             'pig' => q\register :FUNCPATH:/testudf.jar;
> a = load ':INPATH:/singlefile/studenttab10k' as (name, age, gpa);
> b = foreach a generate flatten(name) as n, flatten(org.apache.pig.test.udf.evalfunc.CreateMap((chararray)name, gpa)) as m;
> store b into ':OUTPATH:' using org.apache.pig.test.udf.storefunc.StringStore();\,
>             },
> {code}



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