java.lang.RuntimeException: java.lang.ClassNotFoundException: TransMapper1

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java.lang.ClassNotFoundException: mapred.MaxTemperatureMapper_v1
java.lang.RuntimeException: java.lang.ClassNotFoundException: TransMapper1
at org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:199)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:718)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:364)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)

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