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From ramesh b <rem...@gmail.com>
Subject Re: Issue with running hadoop program using eclipse
Date Sat, 23 Feb 2013 02:45:56 GMT
Hello vikas,
Exception nowhere it says failed to connect remote machine or hdfs, and you
can run from windows or linux that s not an issue..please check your code
once again or post your code!.
If you still doubt connecting remote machine..Make a jar out of your
wordcount and give a chance in linux!
Regards,
Ramesh Byndoor
On Jan 31, 2013 11:57 AM, "Vikas Jadhav" <vikascjadhav87@gmail.com> wrote:

> Hi
> I have one windows machine and one linux machine
> my eclipse is on winowds machine
> and hadoop running on single linux machine
> I am trying to run wordcount program from eclipse(on windows machine) to
> Hadoop(on linux machine)
>  I getting following error
>
>  3/01/31 11:48:14 WARN mapred.JobClient: Use GenericOptionsParser for
> parsing the arguments. Applications should implement Tool for the same.
> 13/01/31 11:48:15 WARN mapred.JobClient: No job jar file set.  User
> classes may not be found. See JobConf(Class) or JobConf#setJar(String).
> 13/01/31 11:48:16 INFO input.FileInputFormat: Total input paths to process
> : 1
> 13/01/31 11:48:16 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> 13/01/31 11:48:16 WARN snappy.LoadSnappy: Snappy native library not loaded
> 13/01/31 11:48:26 INFO mapred.JobClient: Running job: job_201301300613_0029
> 13/01/31 11:48:27 INFO mapred.JobClient:  map 0% reduce 0%
> 13/01/31 11:48:40 INFO mapred.JobClient: Task Id :
> attempt_201301300613_0029_m_000000_0, Status : FAILED
> java.lang.RuntimeException: java.lang.ClassNotFoundException:
> WordCount$MapClass
>  at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:867)
>  at
> org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:199)
>  at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:719)
>  at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>  at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
>  at java.security.AccessController.doPrivileged(Native Method)
>  at javax.security.auth.Subject.doAs(Subject.java:396)
>  at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>  at org.apache.hadoop.mapred.Child.main(Child.java:249)
> Caused by: java.lang.ClassNotFoundException: WordCount$MapClass
>  at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>  at java.security.AccessController.doPrivileged(Native Method)
>  at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>  at java.lang.Class.forName0(Native Method)
>  at java.lang.Class.forName(Class.java:247)
>  at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
>  at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:865)
>  ... 8 more
>
>
>
>
> Also I want to know how to debug Hadoop Program using eclipse.
>
>
>
>
> Thank You.
>
>

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