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https://issues.apache.org/jira/browse/HDFS-4667?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Binglin Chang updated HDFS-4667:
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    Attachment: HDFS-4667.demo.patch

@Jing Zhao, @Nicholas.
Here is a initial demo patch, I don't know much about snapshot internals, could 
you please look at it and give me some advice on my approach?
                
> Capture renamed files/directories in snapshot diff report
> ---------------------------------------------------------
>
>                 Key: HDFS-4667
>                 URL: https://issues.apache.org/jira/browse/HDFS-4667
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Jing Zhao
>            Assignee: Binglin Chang
>         Attachments: HDFS-4667.demo.patch
>
>
> Currently in the diff report we only show file/dir creation, deletion and 
> modification. After rename with snapshots is supported, renamed file/dir 
> should also be captured in the diff report.

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