java.lang.IncompatibleClassChangeError

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    • java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected at org.apache.crunch.hadoop.mapreduce.lib.output.CrunchMultipleOutputs.getNamedOutputsList(CrunchMultipleOutputs.java:210) at org.apache.crunch.hadoop.mapreduce.lib.output.CrunchMultipleOutputs.checkNamedOutputName(CrunchMultipleOutputs.java:197) at org.apache.crunch.hadoop.mapreduce.lib.output.CrunchMultipleOutputs.addNamedOutput(CrunchMultipleOutputs.java:256) at org.apache.crunch.io.impl.FileTargetImpl.configureForMapReduce(FileTargetImpl.java:65) at org.apache.crunch.io.text.TextFileTarget.configureForMapReduce(TextFileTarget.java:70) at org.apache.crunch.impl.mr.plan.MSCROutputHandler.configure(MSCROutputHandler.java:63) at org.apache.crunch.io.impl.FileTargetImpl.accept(FileTargetImpl.java:71) at org.apache.crunch.io.impl.SourceTargetImpl.accept(SourceTargetImpl.java:58) at org.apache.crunch.impl.mr.plan.MSCROutputHandler.configureNode(MSCROutputHandler.java:51) at org.apache.crunch.impl.mr.plan.JobPrototype.build(JobPrototype.java:138) at org.apache.crunch.impl.mr.plan.JobPrototype.getCrunchJob(JobPrototype.java:114) at org.apache.crunch.impl.mr.plan.MSCRPlanner.plan(MSCRPlanner.java:111) at org.apache.crunch.impl.mr.MRPipeline.plan(MRPipeline.java:144) at org.apache.crunch.impl.mr.MRPipeline.run(MRPipeline.java:154) at org.apache.crunch.impl.mr.MRPipeline.done(MRPipeline.java:183) at org.apache.crunch.examples.WordCount.run(WordCount.java:70) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.apache.crunch.examples.WordCount.main(WordCount.java:76) 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.main(RunJar.java:208)
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