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Review request for Ambari, Jonathan Hurley, Nate Cole, and Sumit Mohanty. Bugs: AMBARI-18899 https://issues.apache.org/jira/browse/AMBARI-18899 Repository: ambari Description ------- I think not marking HDFS as restart required when Ambari upgrades is a good goal. In general its a difficult to get it right for all services. * hadoop.security.key.provider.path * dfs.encryption.key.provider.uri These two are removed by stack advisor when RANGER KMS does not exist. We should find out why it got added on Ambari upgrade. This seems like a bug to me. * namenode_backup_dir Diffs ----- ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/configuration/hadoop-env.xml afaaee8 ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/core-site.xml 846b09e ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/hdfs-site.xml aad524d ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/core-site.xml 4f18611 ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/hdfs-site.xml 0fed58d Diff: https://reviews.apache.org/r/53793/diff/ Testing ------- Checked on cluster with Ranger installed. Upgraded Ambari 2.4.2->2.5.0 without these properties, services were able to stop/start without issues. Thanks, Dmitro Lisnichenko