Ashutosh Chauhan updated PIG-773:

    Attachment: pig-773_v3.patch

It turned out that there was a bug in DataType.java where schema for a Bag is 
computed. The patch fixes the bug. Test cases are modified 
to match the expected behavior. Also the values generated by the parser are 
checked against expected values for the parsed constants.

> Empty complex constants (empty bag, empty tuple and empty map) should be 
> supported
> ----------------------------------------------------------------------------------
>                 Key: PIG-773
>                 URL: https://issues.apache.org/jira/browse/PIG-773
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.3.0
>            Reporter: Pradeep Kamath
>            Assignee: Ashutosh Chauhan
>            Priority: Minor
>         Attachments: pig-773.patch, pig-773_v2.patch, pig-773_v3.patch
> We should be able to create empty bag constant using {}, empty tuple constant 
> using (), empty map constant using [] within a pig script

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