1
荫试图运行随机森林例子。我运行的命令是异常线程“main” java.lang.IncompatibleClassChangeError在象夫0.9 Hadoop的2.6
hadoop jar mahout-examples-0.9-job.jar org.apache.mahout.classifier.df.mapreduce.BuildForest -Dmapred.max.split.size=1874231 -d testdata/KDDTrain+.arff -ds testdata/KDDTrain.info -sl 5 -p -t 100 -o nsl-forest
我得到这个错误:
Exception in thread "main" java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
at org.apache.mahout.classifier.df.mapreduce.partial.PartialBuilder.processOutput(PartialBuilder.java:113)
at org.apache.mahout.classifier.df.mapreduce.partial.PartialBuilder.parseOutput(PartialBuilder.java:89)
at org.apache.mahout.classifier.df.mapreduce.Builder.build(Builder.java:294)
at org.apache.mahout.classifier.df.mapreduce.BuildForest.buildForest(BuildForest.java:228)
at org.apache.mahout.classifier.df.mapreduce.BuildForest.run(BuildForest.java:188)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.mahout.classifier.df.mapreduce.BuildForest.main(BuildForest.java:252)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
我用亨利马乌0.9和Hadoop 2.6.0
我需要做什么来解决这个问题呢?使用一些罐子被编译在Hadoop-1,并正在使用Hadoop-2
我指着一些网址,请通过他们去使用
感谢您的帮助。它现在通过应用此链接中的步骤http://permalink.gmane.org/gmane.comp.apache.mahout.user/20333 – joody 2015-03-20 15:08:36