Hi all,
I get the following exception when using Spark to run example k-means
program. I am using Spark 1.0.0 and running the program locally.
java.io.InvalidClassException: scala.Tuple2; invalid descriptor for field _1
at
java.io.ObjectStreamClass.readNonProxy(ObjectStreamClass.java:697)
at
java.io.ObjectInputStream.readClassDescriptor(ObjectInputStream.java:827)
at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)
at
java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1514)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1750)
at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
at
org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:63)
at
org.apache.spark.serializer.DeserializationStream$$anon$1.getNext(Serializer.scala:125)
at
org.apache.spark.util.NextIterator.hasNext(NextIterator.scala:71)
at scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:371)
at
org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:30)
at
org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39)
at
org.apache.spark.Aggregator.combineCombinersByKey(Aggregator.scala:87)
at
org.apache.spark.rdd.PairRDDFunctions$$anonfun$combineByKey$3.apply(PairRDDFunctions.scala:101)
at
org.apache.spark.rdd.PairRDDFunctions$$anonfun$combineByKey$3.apply(PairRDDFunctions.scala:100)
at org.apache.spark.rdd.RDD$$anonfun$14.apply(RDD.scala:582)
at org.apache.spark.rdd.RDD$$anonfun$14.apply(RDD.scala:582)
at
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:229)
at
org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111)
at org.apache.spark.scheduler.Task.run(Task.scala:51)
at
org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:187)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.IllegalArgumentException: illegal signature
at java.io.ObjectStreamField.<init>(ObjectStreamField.java:119)
at
java.io.ObjectStreamClass.readNonProxy(ObjectStreamClass.java:695)
... 26 more
Anyone know why this is happening?
Thanks,
Suman.
