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https://issues.apache.org/jira/browse/HDFS-4177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13496750#comment-13496750
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Aaron T. Myers commented on HDFS-4177:
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OK. I still think ImmutableList would do just fine in this case, but I don't
feel strongly about it. We can roll with ReadOnlyList if you prefer.
> Add a snapshot parameter to INodeDirectory.getChildrenList()
> ------------------------------------------------------------
>
> Key: HDFS-4177
> URL: https://issues.apache.org/jira/browse/HDFS-4177
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: Snapshot (HDFS-2802)
>
> Attachments: h4177_20121112b.patch, h4177_20121112.patch
>
>
> With the snapshot features, the children list of directories can be different
> in snapshots and the current view. The snapshot information is required to
> select the children list.
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