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From mpiller <m...@themidnightcoders.com>
Subject DistCp - NoClassDefFoundError
Date Fri, 28 Aug 2009 17:34:14 GMT

Hi,

I am using the DistCp class inside of my application to copy final output
files out into S3 (this is per Amazon's recommendation). However, when I run
the program I get the following exception:

java.lang.NoClassDefFoundError: org/apache/hadoop/tools/DistCp
        at apppuncher.Aggregator.main(Aggregator.java:130)
        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:165)
        at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at org.apache.hadoop.mapred.JobShell.main(JobShell.java:68)

Is there something special I need to do so DistCp (and other Hadoop tools
classes) would be recognized in the JVM?

Thanks,
Mark
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