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(Updated Nov. 10, 2016, 8:50 a.m.) Review request for Ambari, Dmitro Lisnichenko, Jonathan Hurley, Sumit Mohanty, and Sid Wagle. Bugs: AMBARI-18832 https://issues.apache.org/jira/browse/AMBARI-18832 Repository: ambari Description ------- A single missing directory named `namenode-formatted` can result in Ambari reformatting the NameNode and causing total data loss in a cluster. Diffs (updated) ----- ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_namenode.py b7735f4 ambari-server/src/test/python/stacks/2.0.6/HDFS/test_namenode.py 4cfa2b2 Diff: https://reviews.apache.org/r/53602/diff/ Testing ------- mvn clean test Thanks, Andrew Onischuk