Patrick Hunt updated PIG-735:

    Attachment: PIG-735.patch

This patch fixes the NPE, but I'm not in a position to test it so I'll leave 
that to someone on the pig team.

> NPE in PhysicalPlan clone operation
> -----------------------------------
>                 Key: PIG-735
>                 URL: https://issues.apache.org/jira/browse/PIG-735
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Patrick Hunt
>         Attachments: PIG-735.patch
> clone() operation in 
> src/org/apache/pig/backend/hadoop/executionengine/physicalLayer/plans/PhysicalPlan.java
>  can throws NPE rather than clone not supported
> Note: this code fails to compile under eclipse with 1.6 target and "null 
> pointer access" in java compiler
> preference set to "error"

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