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Task: attempt_1470094126725_0018_m_000006_0 - exited : java.io.IOException: java.lang.ClassNotFoundException: Class not found
java.lang.ClassNotFoundException: Class  not found	at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSplit.readFields(PigSplit.java:224)	at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:71)	at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:42)	at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:372)	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:754)	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Subject.java:422)	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709)	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)