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This exception has no message.
java.lang.NullPointerException: 	at com.hadoop.compression.fourmc.FourMcInputStream.close(FourMcInputStream.java:341)	at org.apache.hadoop.util.LineReader.close(LineReader.java:150)	at com.hadoop.mapreduce.FourMcLineRecordReader.close(FourMcLineRecordReader.java:106)	at com.splunk.mr.input.SplunkRecordReaderWrapper.close(SplunkRecordReaderWrapper.java:58)	at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.close(MapTask.java:532)	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:800)	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)	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:1657)	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)