[jira] [Created] (SPARK-22427) StackOverFlowError when using FPGrowth

[lyt (JIRA)]

lyt created SPARK-22427:
---------------------------

             Summary: StackOverFlowError when using FPGrowth
                 Key: SPARK-22427
                 URL: https://issues.apache.org/jira/browse/SPARK-22427
             Project: Spark
          Issue Type: Bug
          Components: ML, MLlib
    Affects Versions: 2.2.0
         Environment: Centos Linux 3.10.0-327.el7.x86_64
java 1.8.0.111
spark 2.2.0
            Reporter: lyt
            Priority: Normal


code part:
        val path = jobConfig.getString("hdfspath")
        val vectordata = sc.sparkContext.textFile(path)
        val finaldata = sc.createDataset(vectordata.map(obj => {
          obj.split(" ")
        }).filter(arr => arr.length > 0)).toDF("items")
        val fpg = new FPGrowth()
        
fpg.setMinSupport(minSupport).setItemsCol("items").setMinConfidence(minConfidence)
        val train = fpg.fit(finaldata)
        print(train.freqItemsets.count())
        print(train.associationRules.count())
        train.save("/tmp/FPGModel")

And encountered following exception:
Driver stacktrace:
        at 
org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1499)
        at 
org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1487)
        at 
org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1486)
        at 
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
        at 
org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1486)
        at 
org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:814)
        at 
org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:814)
        at scala.Option.foreach(Option.scala:257)
        at 
org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:814)
        at 
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1714)
        at 
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1669)
        at 
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1658)
        at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
        at 
org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:630)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:2022)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:2043)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:2062)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:2087)
        at org.apache.spark.rdd.RDD$$anonfun$collect$1.apply(RDD.scala:936)
        at 
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
        at 
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
        at org.apache.spark.rdd.RDD.withScope(RDD.scala:362)
        at org.apache.spark.rdd.RDD.collect(RDD.scala:935)
        at 
org.apache.spark.sql.execution.SparkPlan.executeCollect(SparkPlan.scala:278)
        at 
org.apache.spark.sql.Dataset$$anonfun$count$1.apply(Dataset.scala:2430)
        at 
org.apache.spark.sql.Dataset$$anonfun$count$1.apply(Dataset.scala:2429)
        at org.apache.spark.sql.Dataset$$anonfun$55.apply(Dataset.scala:2837)
        at 
org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:65)
        at org.apache.spark.sql.Dataset.withAction(Dataset.scala:2836)
        at org.apache.spark.sql.Dataset.count(Dataset.scala:2429)
        at DataMining.FPGrowth$.runJob(FPGrowth.scala:116)
        at DataMining.testFPG$.main(FPGrowth.scala:36)
        at DataMining.testFPG.main(FPGrowth.scala)
        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$$runMain(SparkSubmit.scala:755)
        at 
org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:180)
        at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:205)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:119)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.StackOverflowError
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:616)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:36)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:37)
        at com.twitter.chill.Tuple2Serializer.write(TupleSerializers.scala:33)
        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:29)
        at 
com.twitter.chill.TraversableSerializer$$anonfun$write$1.apply(Traversable.scala:27)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
        at 
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
        at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
        at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:27)
        at com.twitter.chill.TraversableSerializer.write(Traversable.scala:21)
        at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
        at 
com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
        at 
com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
17/11/02 13:34:08 INFO MapOutputTrackerMasterEndpoint: 
MapOutputTrackerMasterEndpoint stopped!
17/11/02 13:34:08 INFO MemoryStore: MemoryStore cleared
17/11/02 13:34:08 INFO BlockManager: BlockManager stopped
17/11/02 13:34:08 INFO BlockManagerMaster: BlockManagerMaster stopped
17/11/02 13:34:08 INFO OutputCommitCoordinator$OutputCommitCoordinatorEndpoint: 
OutputCommitCoordinator stopped!
17/11/02 13:34:08 INFO SparkContext: Successfully stopped SparkContext
17/11/02 13:34:08 INFO ShutdownHookManager: Shutdown hook called
17/11/02 13:34:08 INFO ShutdownHookManager: Deleting directory 
/tmp/spark-6a7f9ad8-2332-433e-8132-1fc3d96b6845



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