小编ajn*_*rro的帖子

我使用的是spark 0.91与MLlib 0.91上DSE

尝试在独立模式下运行以下代码时

val parsedData = sc.parallelize((1 to 1000).
  map {
  line =>
    LabeledPoint(0.0, Array(0.0, 0.4, 0.3))
})
val numIterations = 2
val model = LinearRegressionWithSGD.train(parsedData, numIterations)

我收到这个错误:

    14/09/20 14:28:37 ERROR OneForOneStrategy: org.jblas.DoubleMatrix cannot be cast to org.jblas.DoubleMatrix
java.lang.ClassCastException: org.jblas.DoubleMatrix cannot be cast to org.jblas.DoubleMatrix
        at org.apache.spark.mllib.optimization.GradientDescent$$anonfun$runMiniBatchSGD$1$$anonfun$2.apply(GradientDescent.scala:150)
        at org.apache.spark.mllib.optimization.GradientDescent$$anonfun$runMiniBatchSGD$1$$anonfun$2.apply(GradientDescent.scala:150)
        at org.apache.spark.rdd.RDD$$anonfun$6.apply(RDD.scala:677)
        at org.apache.spark.rdd.RDD$$anonfun$6.apply(RDD.scala:674)
        at org.apache.spark.scheduler.JobWaiter.taskSucceeded(JobWaiter.scala:56)
        at org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:846)
        at org.apache.spark.scheduler.DAGScheduler.processEvent(DAGScheduler.scala:601)

只有在尝试运行独立应用程序时才会发生这种情况.它适用于火花壳(dse spark).有任何想法吗？

更新:

当我在REPL上创建一个对象时,getClassLoader返回:

scala>  new org.jblas.DoubleMatrix().getClass().getClassLoader()
res3: ClassLoader = ModuleClassLoader:Analytics

但是当我在独立模式下运行(使用spark类)时,它会返回

new org.jblas.DoubleMatrix().getClass().getClassLoader():
class= SystemClassLoader …