Hi Friends ,
i am getting UnknownHostException while executing Hadoop Word count program

getting below details from job tracker Web page

*User:* sujit
*Job Name:* word count
*Job File:*
hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/sujit/.staging/job_201204112234_0002/job.xml<http://localhost:50030/jobconf.jsp?jobid=job_201204112234_0002>
*Submit Host:* sujit.(null)
*Submit Host Address:* 127.0.1.1
*Job-ACLs: All users are allowed*
*Job Setup:*None
*Status:* Failed
*Failure Info:*Job initialization failed: java.net.UnknownHostException:
sujit.(null) is not a valid Inet address at org.apache.hadoop.net.
NetUtils.verifyHostnames(NetUtils.java:569) at
org.apache.hadoop.mapred.JobInProgress.initTasks(JobInProgress.java:711) at
org.apache.hadoop.mapred.JobTracker.initJob(JobTracker.java:4207) at
org.apache.hadoop.mapred.EagerTaskInitializationListener$InitJob.run(EagerTaskInitializationListener.java:79)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
*Started at:* Wed Apr 11 22:36:46 IST 2012
*Failed at:* Wed Apr 11 22:36:47 IST 2012
*Failed in:* 0sec
*Job Cleanup:*None
Can some one help me how to resolve this issue .
i tried with : http://wiki.apache.org/hadoop/UnknownHost

but still not able to resolve issue ,
please help me out .
Hadoop Version: hadoop-1.0.1.tar.gz
java version "1.6.0_30"
Operating System : Ubuntu 11.10
*Note *: All node were up before starting execution of Program

Kind Regards
Sujit Dhamale
<http://wiki.apache.org/hadoop/UnknownHost>

Please check contents of /etc/hosts for the hostname and ipaddress mapping.

On Thu, Apr 12, 2012 at 11:11 PM, Sujit Dhamale <[EMAIL PROTECTED]>wrote:

> Hi Friends ,
> i am getting UnknownHostException while executing Hadoop Word count program
>
> getting below details from job tracker Web page
>
> *User:* sujit
> *Job Name:* word count
> *Job File:*
>
> hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/sujit/.staging/job_201204112234_0002/job.xml<
> http://localhost:50030/jobconf.jsp?jobid=job_201204112234_0002>
> *Submit Host:* sujit.(null)
> *Submit Host Address:* 127.0.1.1
> *Job-ACLs: All users are allowed*
> *Job Setup:*None
> *Status:* Failed
> *Failure Info:*Job initialization failed: java.net.UnknownHostException:
> sujit.(null) is not a valid Inet address at org.apache.hadoop.net.
> NetUtils.verifyHostnames(NetUtils.java:569) at
> org.apache.hadoop.mapred.JobInProgress.initTasks(JobInProgress.java:711) at
> org.apache.hadoop.mapred.JobTracker.initJob(JobTracker.java:4207) at
>
> org.apache.hadoop.mapred.EagerTaskInitializationListener$InitJob.run(EagerTaskInitializationListener.java:79)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> *Started at:* Wed Apr 11 22:36:46 IST 2012
> *Failed at:* Wed Apr 11 22:36:47 IST 2012
> *Failed in:* 0sec
> *Job Cleanup:*None
>
>
>
>
> Can some one help me how to resolve this issue .
> i tried with : http://wiki.apache.org/hadoop/UnknownHost
>
> but still not able to resolve issue ,
> please help me out .
>
>
> Hadoop Version: hadoop-1.0.1.tar.gz
> java version "1.6.0_30"
> Operating System : Ubuntu 11.10
>
>
> *Note *: All node were up before starting execution of Program
>
> Kind Regards
> Sujit Dhamale
> <http://wiki.apache.org/hadoop/UnknownHost>
>

--
https://github.com/zinnia-phatak-dev/Nectar

hi Madhu,
After doing Modification in /ets/host it's working fine

Thanks a lot :)

Kind Regards
Sijit Dhamale
(+91 9970086652)

On Fri, Apr 13, 2012 at 10:49 AM, madhu phatak <[EMAIL PROTECTED]> wrote:

> Please check contents of /etc/hosts for the hostname and ipaddress mapping.
>
> On Thu, Apr 12, 2012 at 11:11 PM, Sujit Dhamale <[EMAIL PROTECTED]
> >wrote:
>
> > Hi Friends ,
> > i am getting UnknownHostException while executing Hadoop Word count
> program
> >
> > getting below details from job tracker Web page
> >
> > *User:* sujit
> > *Job Name:* word count
> > *Job File:*
> >
> >
> hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/sujit/.staging/job_201204112234_0002/job.xml<
> > http://localhost:50030/jobconf.jsp?jobid=job_201204112234_0002>
> > *Submit Host:* sujit.(null)
> > *Submit Host Address:* 127.0.1.1
> > *Job-ACLs: All users are allowed*
> > *Job Setup:*None
> > *Status:* Failed
> > *Failure Info:*Job initialization failed: java.net.UnknownHostException:
> > sujit.(null) is not a valid Inet address at org.apache.hadoop.net.
> > NetUtils.verifyHostnames(NetUtils.java:569) at
> > org.apache.hadoop.mapred.JobInProgress.initTasks(JobInProgress.java:711)
> at
> > org.apache.hadoop.mapred.JobTracker.initJob(JobTracker.java:4207) at
> >
> >
> org.apache.hadoop.mapred.EagerTaskInitializationListener$InitJob.run(EagerTaskInitializationListener.java:79)
> > at
> >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > at
> >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > at java.lang.Thread.run(Thread.java:662)
> > *Started at:* Wed Apr 11 22:36:46 IST 2012
> > *Failed at:* Wed Apr 11 22:36:47 IST 2012
> > *Failed in:* 0sec
> > *Job Cleanup:*None
> >
> >
> >
> >
> > Can some one help me how to resolve this issue .
> > i tried with : http://wiki.apache.org/hadoop/UnknownHost
> >
> > but still not able to resolve issue ,
> > please help me out .
> >
> >
> > Hadoop Version: hadoop-1.0.1.tar.gz
> > java version "1.6.0_30"
> > Operating System : Ubuntu 11.10
> >
> >
> > *Note *: All node were up before starting execution of Program
> >
> > Kind Regards
> > Sujit Dhamale
> > <http://wiki.apache.org/hadoop/UnknownHost>
> >
>
>
>
> --
> https://github.com/zinnia-phatak-dev/Nectar
>