java.lang.ClassNotFoundException

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  • java.lang.ClassNotFoundException: org.apache.hama.algebra.AdditionReduce at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:633) at org.apache.hadoop.mapred.JobConf.getReducerClass(JobConf.java:747) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:318)
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