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https://issues.apache.org/jira/browse/HDFS-4436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13561976#comment-13561976
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Jing Zhao commented on HDFS-4436:
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Seems the INodeDirectoryWithSnapshot#removeChild still needs to update the
circular linked list when the node is directly removed from the created list.
Otherwise we may have extra hidden nodes in the circular linked list.
> The snapshot copy INode.recordModification(..) returned is never used
> ---------------------------------------------------------------------
>
> Key: HDFS-4436
> URL: https://issues.apache.org/jira/browse/HDFS-4436
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Priority: Minor
> Attachments: h4436_20130123.patch
>
>
> INode.recordModification(..) and some other related methods currently returns
> a pair of current object and the snapshot copy. However, the snapshot copy
> is never used.
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