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java.lang.ArrayIndexOutOfBoundsException: 1	at $line59.$read$$iwC$$iwC$$iwC$$iwC$$anonfun$1.apply(:18)	at $line59.$read$$iwC$$iwC$$iwC$$iwC$$anonfun$1.apply(:16)	at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)	at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)	at org.apache.spark.Aggregator.combineValuesByKey(Aggregator.scala:58)	at org.apache.spark.rdd.PairRDDFunctions$$anonfun$1.apply(PairRDDFunctions.scala:95)	at org.apache.spark.rdd.PairRDDFunctions$$anonfun$1.apply(PairRDDFunctions.scala:94)	at org.apache.spark.rdd.RDD$$anonfun$3.apply(RDD.scala:471)	at org.apache.spark.rdd.RDD$$anonfun$3.apply(RDD.scala:471)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:34)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:161)	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:102)	at org.apache.spark.scheduler.Task.run(Task.scala:53)	at org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:213)	at org.apache.spark.deploy.SparkHadoopUtil$$anon$1.run(SparkHadoopUtil.scala:46)	at org.apache.spark.deploy.SparkHadoopUtil$$anon$1.run(SparkHadoopUtil.scala:45)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Subject.java:396)	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)	at org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:45)	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:178)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at java.lang.Thread.run(Thread.java:662)