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https://issues.apache.org/jira/browse/HDFS-15483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17178795#comment-17178795
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Hemanth Boyina commented on HDFS-15483:
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committed to trunk , thanks [~shashikant] for the contribution
thanks [~szetszwo] [~msingh] for the reviews
> Ordered snapshot deletion: Disallow rename between two snapshottable
> directories
> --------------------------------------------------------------------------------
>
> Key: HDFS-15483
> URL: https://issues.apache.org/jira/browse/HDFS-15483
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: snapshots
> Reporter: Tsz-wo Sze
> Assignee: Shashikant Banerjee
> Priority: Major
>
> With the ordered snapshot deletion feature, only the *earliest* snapshot can
> be actually deleted from the file system. If renaming between snapshottable
> directories is allowed, only the earliest snapshot among all the
> snapshottable directories can be actually deleted. In such case, individual
> snapshottable directory may not be able to free up the resources by itself.
> Therefore, we propose disallowing renaming between snapshottable directories
> in this JIRA.
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