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https://issues.apache.org/jira/browse/HDFS-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13639790#comment-13639790
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Tsz Wo (Nicholas), SZE commented on HDFS-4686:
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- In INodeDirectory.replaceChild, if oldChild.isReference()), it should replace
the referred inode.
- WithCount.referenceCount should be removed. Use withNameList and parent to
deduce the count. Also, rename incrementReferenceCount and
decrementReferenceCount to addReference and remove Reference
.
- Add a search method to AbstractINodeDiffList for searching snapshot. It
should use a binary search but let's use a linear search for now.
> Fix quota computation for rename with snapshots
> -----------------------------------------------
>
> Key: HDFS-4686
> URL: https://issues.apache.org/jira/browse/HDFS-4686
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-4686.001.patch, HDFS-4686.001.patch,
> HDFS-4686.002.patch
>
>
> Currently after a rename operation within/from a snapshottable directory, a
> reference node is created in both src and dst subtree, pointing to the
> original renamed inode. With this change the original quota computation may
> count the quota usage of the renamed subtree multiple times. This jira tries
> to fix this issue.
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