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This exception has no message.
java.lang.NullPointerException: 	at com.hadoop.compression.fourmc.Lz4Decompressor.reset(Lz4Decompressor.java:234)	at org.apache.hadoop.io.compress.CodecPool.returnDecompressor(CodecPool.java:224)	at org.apache.hadoop.mapreduce.lib.input.LineRecordReader.close(LineRecordReader.java:235)	at com.splunk.mr.input.SplunkLineRecordReader.close(SplunkLineRecordReader.java:21)	at com.splunk.mr.SplunkBaseMapper$RecReader.close(SplunkBaseMapper.java:246)	at com.splunk.mr.SplunkBaseMapper.runImpl(SplunkBaseMapper.java:305)	at com.splunk.mr.SplunkSearchMapper.runImpl(SplunkSearchMapper.java:419)	at com.splunk.mr.SplunkBaseMapper.run(SplunkBaseMapper.java:164)	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:796)	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)