zhjwpku opened a new pull request #1670: HDFS-14925. Rename operation should check nest snapshot URL: https://github.com/apache/hadoop/pull/1670 If the src directory or any of its descendant is snapshottable and the dst directory or its any of its ancestors is snapshottable, we consider this as nested snapshot, which should be denied. Signed-off-by: Zhao Junwang <zhjw...@gmail.com> ## NOTICE Please create an issue in ASF JIRA before opening a pull request, and you need to set the title of the pull request which starts with the corresponding JIRA issue number. (e.g. HADOOP-XXXXX. Fix a typo in YYY.) For more details, please see https://cwiki.apache.org/confluence/display/HADOOP/How+To+Contribute
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