Once HADOOP-6703 is checked in we need to override TestFcHdfsSymlink#unwrapException in hdfs so the common tests in FileContextSymlinkBaseTest pass.
Prevent renaming a file, symlink or directory to itself
Given this patch depends on HADOOP-6703, hudson could not be used for testing the patch. I ran the tests locally on my machine and committed the change. Thank you Eli.
+1 for the patch.