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Lost task 1.0 in stage 0.0 (TID 1, gpi-col24.gpi.collect): java.lang.ClassNotFoundException: org.apache.spark.examples.SparkPi$$anonfun$1
scheduler.TaskSetManager: Lost task 1.0 in stage 0.0 (TID 1, gpi-col24.gpi.collect): java.lang.ClassNotFoundException: org.apache.spark.examples.SparkPi$$anonfun$1	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:348)	at org.apache.spark.serializer.JavaDeserializationStream$$anon$1.resolveClass(JavaSerializer.scala:68)	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1620)	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1521)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1781)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)	at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:76)	at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:115)	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:61)	at org.apache.spark.scheduler.Task.run(Task.scala:89)	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)