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https://issues.apache.org/jira/browse/PIG-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098275#comment-13098275
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Daniel Dai commented on PIG-2266:
---------------------------------

That seems reasonable. Can you wrap up a patch?

> bug with input file joining optimization in Pig
> -----------------------------------------------
>
>                 Key: PIG-2266
>                 URL: https://issues.apache.org/jira/browse/PIG-2266
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.9.0
>            Reporter: Joseph Adler
>
> In 
> src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/MRCompiler.java,
>  the function hasTooManyInputFiles instantiated a LoadFunc instance, then 
> calls setLocation before calling setUDFContextSignature. This is inconsistent 
> with the documentation for the LoadFunc interface (see 
> http://pig.apache.org/docs/r0.9.0/api/org/apache/pig/LoadFunc.html#setUDFContextSignature(java.lang.String)).
>  (We've written UDFs that assume that setUDFContextSignature is called first.)
> I think you can fix this by adding 
>    loader.setUDFContextSignature(ld.getSignature());
> Before
>    loader.setLocation(location, job);

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