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https://issues.apache.org/jira/browse/PIG-3039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499156#comment-13499156
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Cheolsoo Park commented on PIG-3039:
------------------------------------

I am +1 for adding this to 0.11. In fact, I ran a full unit test and e2e with 
your patch and didn't find any regression.
                
> Not possible to use custom version of jackson jars
> --------------------------------------------------
>
>                 Key: PIG-3039
>                 URL: https://issues.apache.org/jira/browse/PIG-3039
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.10.0
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.12
>
>         Attachments: PIG-3039-download-jackson.patch, PIG-3039-trunk.patch
>
>
> User is trying
> register jackson_core_asl-1.9.4_1.jar;
> register jackson_mapper_asl-1.9.4_1.jar;
> register jackson_xc-1.9.4_1.jar;
> But pig.jar/pig-withouthadoop.jar has jackson jars and JarManager packages 
> the jackson from pig.jar into job.jar(PIG-2457). We could not find any 
> possible workaround with mapreduce framework to put the user jar first in the 
> classpath as job.jar always takes precedence.
>  The pig script works fine with 0.9 and is a regression in 0.10.  

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