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Task not serializable org.apache.spark.SparkException: Task not serializable
org.apache.spark.SparkException: Task not serializable	at org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:304)	at org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:294)	at org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:122)	at org.apache.spark.SparkContext.clean(SparkContext.scala:2055)	at org.apache.spark.rdd.RDD$$anonfun$foreach$1.apply(RDD.scala:911)	at org.apache.spark.rdd.RDD$$anonfun$foreach$1.apply(RDD.scala:910)	at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)	at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:111)	at org.apache.spark.rdd.RDD.withScope(RDD.scala:316)	at org.apache.spark.rdd.RDD.foreach(RDD.scala:910)	at org.apache.spark.api.java.JavaRDDLike$class.foreach(JavaRDDLike.scala:332)	at org.apache.spark.api.java.AbstractJavaRDDLike.foreach(JavaRDDLike.scala:46)	at edu.uth.clamp.nlp.main.RunPipelineWithSpark.processFolder(RunPipelineWithSpark.java:271)	at edu.uth.clamp.nlp.main.RunPipelineWithSpark.process(RunPipelineWithSpark.java:179)	at edu.uth.clamp.nlp.main.RunPipelineWithSpark.main(RunPipelineWithSpark.java:136)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)	at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)	at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)	at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)	at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)