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java.lang.NullPointerException: 	at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getBlockIndex(	at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(	at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(	at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(	at org.apache.hadoop.mapreduce.Job$	at org.apache.hadoop.mapreduce.Job$	at Method)	at	at	at org.apache.hadoop.mapreduce.Job.submit(	at org.apache.hadoop.mapreduce.Job.waitForCompletion(	at undefined.Main.main(