Tsz-wo Sze created HDFS-15483:
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Summary: 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
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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