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在运行spark文档quick start里面的一个例子的时候，出现了如下错误：
Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.refArrayOps([Ljava/lang/Object;)Lscala/collection/mutable/ArrayOps;
at org.apache.spark.util.Utils$.getCallSite(Utils.scala:1410)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:77)
at SimpleApp$.main(SimpleApp.scala:12)
at SimpleApp.main(SimpleApp.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:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Process finished with exit code 1
因为没有按照文档里面的Scala版本号下载对应的Scala，下载对应的版本2.11.7
改过
val conf = new SparkConf().setAppName("Simple Application").setMaster("local[*]")
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转播
