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Review request for Ambari, Alejandro Fernandez and Sid Wagle. Bugs: AMBARI-21526 https://issues.apache.org/jira/browse/AMBARI-21526 Repository: ambari Description ------- During an upgrade from HDP 2.3 to HDP 2.6, ZKFC fails to upgrade because its version does not change from {{UNKNOWN}}. ``` The following components were found to have version mismatches. Finalize will not complete successfully: natr66-qlrs-dlm30tofnsec-r6-10.openstacklocal: HDFS/ZKFC reports UNKNOWN natr66-qlrs-dlm30tofnsec-r6-14.openstacklocal: HDFS/ZKFC reports UNKNOWN ``` Diffs ----- ambari-server/src/main/java/org/apache/ambari/server/events/listeners/upgrade/StackVersionListener.java 3af5520883 ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/zkfc_slave.py dff15485e7 Diff: https://reviews.apache.org/r/60982/diff/1/ Testing ------- Manual upgrade of ZKFC cluster ... Unit Tests PENDING... Thanks, Jonathan Hurley