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Hadoop, mail # user - gridmix2 gives an classnotfound error?


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gridmix2 gives an classnotfound error?
Nan Zhu 2010-11-08, 22:01
Hi, all

I'm attempting to invoke the gridmix2 benchmark on hadoop-0.20.2, I have
modify the environment variables in the scripts accordingly, but after I
typed "sh rungridmix_2" , the system gives an error like following:

Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/hadoop/streaming/StreamJob
    at org.apache.hadoop.mapred.GridMixRunner$GridMixJob$1.addJob(Unknown
Source)
    at org.apache.hadoop.mapred.GridMixRunner.addJobs(Unknown Source)
    at org.apache.hadoop.mapred.GridMixRunner.addAllJobs(Unknown Source)
    at org.apache.hadoop.mapred.GridMixRunner.addjobs(Unknown Source)
    at org.apache.hadoop.mapred.GridMixRunner.main(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: java.lang.ClassNotFoundException:
org.apache.hadoop.streaming.StreamJob
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
    ... 10 more

I checked the hadoop-0.20.2-streaming.jar, it's there and it seems to be in
a healthy status ( I just upload it to the cluster from my laptop where the
gridmix2 has run successfully )

Anyone once met such a problem? Thank you very much!

Nan