我在Intellij中构建Scala项目，我尝试运行Apache Spark示例。这是我的代码：
package sparkTraining
import org.apache.spark.{SparkConf, SparkContext}
object SimpleApp {
def main(args: Array[String]) {
val logFile = "/usr/local/spark/README.md"
val conf = new SparkConf().setAppName("Simple Application")
val sc = new SparkContext(conf)
val logData = sc.textFile(logFile, 2).cache()
val numAs = logData.filter(line => line.contains("a")).count()
val numBs = logData.filter(line => line.contains("b")).count()
println(s"Lines with a: $numAs, Lines with b: $numBs")
sc.stop()
}
}
我在Intellij上安装了Scala和SBT插件，这是我的 build.sbt 代码：
name := "sparkTraining"
version := "1.0"
scalaVersion := "2.12.0"
我将所有Saprk 2.0.1罐子添加到项目中。但问题是当我运行这段代码时错误：
Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.refArrayOps([Ljava/lang/Object;)Lscala/collection/mutable/ArrayOps;
at org.apache.spark.util.Utils$.getCallSite(Utils.scala:1410)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:77)
at sparkTraining.SimpleApp$.main(testScala.scala:9)
at sparkTraining.SimpleApp.main(testScala.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)
我搜索了它，但找不到任何有用的答案。
以下是点：
这两点对执行有什么影响？ 我怎样才能解决我的问题？ 感谢
