In NameNode.java, DFS_HA_FENCE_METHODS_KEY occurs twice in NAMENODE_SPECIFIC_KEYS.
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SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10697 (See https://builds.apache.org/job/Hadoop-trunk-Commit/10697/)
HDFS-9929. Duplicate keys in NAMENODE_SPECIFIC_KEYS (Contributed by (vinayakumarb: rev a895c66255533b73e2a04c44693b03dc7011340b)
Thank you Vinayakumar B!
Committed trunk and branch-2
The test failures look unrelated to the patch.