Thejas M Nair updated PIG-999:

    Issue Type: Sub-task  (was: Bug)
        Parent: PIG-998

> sorting on map-value fails if map-value is not of bytearray type
> ----------------------------------------------------------------
>                 Key: PIG-999
>                 URL: https://issues.apache.org/jira/browse/PIG-999
>             Project: Pig
>          Issue Type: Sub-task
>            Reporter: Thejas M Nair
> When query execution plan is created by pig, it assumes the type to be 
> bytearray because there is no schema information associated with map fields.
> But at run time, the loader might return the actual type. This results in a 
> ClassCastException.
> This issue points to the larger issue of the way pig is handling types for 
> map-value. 
> This issue should be fixed in the context of revisiting the frontend logic 
> and pig-latin semantics.
> This is related to PIG-880 . The patch in PIG-880 changed PigStorage to 
> always return bytearray for map values to work around this, but other loaders 
> like BinStorage can return the actual type causing this issue.

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