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Review request for Ambari, Dmitro Lisnichenko and Nate Cole. Bugs: AMBARI-22628 https://issues.apache.org/jira/browse/AMBARI-22628 Repository: ambari Description ------- Downloaded client configs have invalid values for spark properties in yarn-site.xml. Issue: spark_version variable is replaced by 'None' in the spark related config properties in yarn-site in the client configs downloaded. Attaching downloaded yarn-site.xml [^yarn-site.xml] Properties with issue: {code:java} <property> <name>yarn.nodemanager.aux-services.spark2_shuffle.classpath</name> <value>/usr/hdp/None/spark2/aux/*</value> </property> <property> <name>yarn.nodemanager.aux-services.spark_shuffle.classpath</name> <value>/usr/hdp/None/spark/aux/*</value> </property> <property> <name>yarn.timeline-service.entity-group-fs-store.group-id-plugin-classpath</name> <value>/usr/hdp/None/spark/hdpLib/*</value> </property> {code} The cause for this is that YARN Clients on hosts without daemons never get a restart command after the initial {{yarn-site.xml}}, and can never fill in the correct values. Diffs ----- ambari-server/src/main/resources/common-services/YARN/2.1.0.2.0/package/scripts/params_linux.py 98141456c7 Diff: https://reviews.apache.org/r/64502/diff/1/ Testing ------- Manual install via UI and Blueprint Thanks, Jonathan Hurley