Exception in thread "main" java.lang.NoSuchMethodError

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Exception in thread “main” java.lang.NoSuchMethodError: scala.Predef.conforms()Lscala/Predef$$less$colon$less;
at org.apache.spark.util.Utils$.getSystemProperties(Utils.scala:1546)
at org.apache.spark.SparkConf.(SparkConf.scala:59)
at org.apache.spark.SparkConf.(SparkConf.scala:53)
at com.nb.sparkApps.sql.SparkSQLUDFUDAF$.main(SparkSQLUDFUDAF.scala:19)
at com.nb.sparkApps.sql.SparkSQLUDFUDAF.main(SparkSQLUDFUDAF.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

出现上述情况一般都是版本问题：

org.apache.spark
spark-sql_2.10
1.6.1

Spark 1.6.1依赖中 spark-sql_2.10要用2.10，如果改为2.11则会报上面的异常

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