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https://issues.apache.org/jira/browse/HDFS-4574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598057#comment-13598057
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Tsz Wo (Nicholas), SZE commented on HDFS-4574:
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> Maven somehow cannot compile the previous patch.
Jing told me that it was due to [a javac
bug|http://stackoverflow.com/questions/9505857/workaround-for-javac-compilation-order-bug-in-maven].
The previous patch, which changed the import, actually did not work.
> Move Diff and EnumCounters to util package
> ------------------------------------------
>
> Key: HDFS-4574
> URL: https://issues.apache.org/jira/browse/HDFS-4574
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Priority: Minor
> Attachments: a.sh, h4574_20130308b.patch, h4574_20130308.patch
>
>
> Diff and EnumCounters are two general utility classes. It is better to put
> them in the util package.
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