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java.lang.AbstractMethodError: com.pwc.spark.tifcretrolookup.TIFCRetroJob$2.call(Ljava/lang/Object;)Ljava/util/Iterator;	at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$1$1.apply(JavaRDDLike.scala:124)	at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$1$1.apply(JavaRDDLike.scala:124)	at scala.collection.Iterator$$anon$12.nextCur(Iterator.scala:434)	at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:440)	at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)	at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)	at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)	at scala.collection.convert.Wrappers$IteratorWrapper.hasNext(Wrappers.scala:30)	at com.pwc.spark.ElasticsearchClientLib.CommonESClient.index(CommonESClient.java:33)	at com.pwc.spark.ElasticsearchClientLib.ESClient.call(ESClient.java:34)	at com.pwc.spark.ElasticsearchClientLib.ESClient.call(ESClient.java:15)	at org.apache.spark.api.java.JavaRDDLike$$anonfun$foreachPartition$1.apply(JavaRDDLike.scala:218)	at org.apache.spark.api.java.JavaRDDLike$$anonfun$foreachPartition$1.apply(JavaRDDLike.scala:218)	at org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$28.apply(RDD.scala:883)	at org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$28.apply(RDD.scala:883)	at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1897)	at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1897)	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70)	at org.apache.spark.scheduler.Task.run(Task.scala:85)	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)