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https://issues.apache.org/jira/browse/HADOOP-10026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13789074#comment-13789074
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Ben McCann commented on HADOOP-10026:
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fyi, if you have the hadoop-supplied jackson 1.x on the classpath and this new
jackson 2.x is also on the classpath that is fine. they are different maven
group ids and different package names, so you can have both in the same project
no problem
> Upgrade to Jackson 2
> --------------------
>
> Key: HADOOP-10026
> URL: https://issues.apache.org/jira/browse/HADOOP-10026
> Project: Hadoop Common
> Issue Type: Task
> Reporter: Ben McCann
> Attachments: hadoop-tools-openstack-jackson.patch
>
>
> I'd like to see Hadoop upgrade to Jackson 2. This is a change that should be
> able to be made to each Hadoop project one at a time, so I've attached a
> patch for the first and will follow up with others if this one is committed.
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