Hi all I had similar usage and also got the same problem.
I guess Spark use some class in my user jars but actually it should use the class in spark-assembly-xxx.jar, but I don't know how to fix it. Kyle 2015-07-22 23:03 GMT+08:00 Ashish Soni <asoni.le...@gmail.com>: > Hi All , > > I am getting below error when i use the --conf > spark.files.userClassPathFirst=true parameter > > Job aborted due to stage failure: Task 3 in stage 0.0 failed 4 times, most > recent failure: Lost task 3.3 in stage 0.0 (TID 32, 10.200.37.161): > java.lang.ClassCastException: cannot assign instance of scala.None$ to > field org.apache.spark.scheduler.Task.metrics of type scala.Option in > instance of org.apache.spark.scheduler.ResultTask > > I am using as below > > spark-submit --conf spark.files.userClassPathFirst=true --driver-memory 6g > --executor-memory 12g --executor-cores 4 --class > com.ericsson.engine.RateDriver --master local > /home/spark/workspace/simplerating/target/simplerating-0.0.1-SNAPSHOT.jar > spark://eSPARKMASTER:7077 hdfs://enamenode/user/spark > > thanks >