Runtime error for wordcount-like example.

[Kunsheng Chen]

Hello everyone,

I am getting some issues when compiling a map-reduce program similar to 
wordcount example.

I followed the instruction in the tutorial and succeeded to compile a jar file.

The problem won't appear until I run it as below:

had...@lobo:/osr/Projects/anansi/mrjobs/src$ 
/osr/Projects/anansi/hadoop/bin/hadoop jar ./hadoop_out_degree.jar may_24 
outout1/
java.lang.ClassNotFoundException: may_24
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:247)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
        at org.apache.hadoop.mapred.JobShell.run(JobShell.java:194)
        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:220)


The folder 'may_24' is definitely there, I am not sure whether I missing 
something when compile, do I have to add manifest file in the class folders ?  

also I am confused about the error info.  Could anyone give me some idea ?


Thanks in advance,

-KUn