Github user tedyu commented on the pull request: https://github.com/apache/spark/pull/11066#issuecomment-180027386 This error surfaced: ``` [info] 2016-02-04 10:15:21.319 - stderr> Exception in thread "main" java.lang.LinkageError: loader constraint violation: when resolving method "org.apache.spark.sql.hive. client.HiveConfUtil$.conf()Lorg/apache/hadoop/hive/conf/HiveConf;" the class loader (instance of org/apache/spark/sql/hive/client/IsolatedClientLoader$$anon$1) of the current class, org/apache/spark/sql/hive/client/HiveClientImpl, and the class loader (instance of sun/misc/Launcher$AppClassLoader) for resolved class, org/apache/spark/sql/hive/client/ HiveConfUtil$, have different Class objects for the type /hadoop/hive/conf/HiveConf; used in the signature ```
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