java.lang.IncompatibleClassChangeError

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    • java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.Counter, but class was expected at edu.jhu.thrax.hadoop.features.WordLexicalProbabilityCalculator$Map.map(WordLexicalProbabilityCalculator.java:56) at edu.jhu.thrax.hadoop.features.WordLexicalProbabilityCalculator$Map.map(WordLexicalProbabilityCalculator.java:28) at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:756) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:338) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:157) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:152)
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