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Review request for hive and Xuefu Zhang. Bugs: HIVE-9449 https://issues.apache.org/jira/browse/HIVE-9449 Repository: hive-git Description ------- We only push Spark configuration and RSC configuration to Spark while launch Spark cluster now, for Spark on YARN mode, Spark need extra YARN configuration to launch Spark cluster. Besides this, to support dynamically configuration setting for RSC configuration/YARN configuration, we need to recreate SparkSession while RSC configuration/YARN configuration update as well, as they may influence the Spark cluster deployment as well. Diffs ----- common/src/java/org/apache/hadoop/hive/conf/HiveConf.java d4d98d7 ql/src/java/org/apache/hadoop/hive/ql/exec/spark/HiveSparkClientFactory.java 9dc6c47 Diff: https://reviews.apache.org/r/30208/diff/ Testing ------- Thanks, chengxiang li