Ahmed Hussein created HDFS-15979:
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Summary: Move within EZ fails and cannot remove nested EZs
Key: HDFS-15979
URL: https://issues.apache.org/jira/browse/HDFS-15979
Project: Hadoop HDFS
Issue Type: Bug
Components: encryption, hdfs
Reporter: Ahmed Hussein
Assignee: Ahmed Hussein
Moving between EZ directories should work fine if the EZ key for the
directories is identical. If the key is name identical then no
decrypt/re-encrypt is necessary.
However, the rename operation checks more than the key name. It compares the
inode number (unique identifier) of the source and dest dirs which will never
be the same for 2 dirs resulting in the cited failure. Note it also incorrectly
compares the key version.
A related issue is if an ancestor of a EZ share the same key (ie. /projects/foo
and /projects/foo/bar/blah both use same key), files also cannot be moved from
the child to a parent dir, plus the child EZ cannot be removed even though it's
now covered by the ancestor.
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