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https://issues.apache.org/jira/browse/HDFS-4141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13489290#comment-13489290
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Suresh Srinivas commented on HDFS-4141:
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BTW you use single line comment // followed by no space. It reads better with a
space and a lot of HDFS code uses that convention. Same way no space after for
etc. For new code, you may just want to use eclipse for format the code.
> Directory diff in snapshots
> ---------------------------
>
> Key: HDFS-4141
> URL: https://issues.apache.org/jira/browse/HDFS-4141
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h4141_20121101.patch
>
>
> With snapshots, the same directory could have different states, e.g.
> different sets of children, in different snapshots. We implement a directory
> diff algorithm in this JIRA.
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