Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
Hadoop >> mail # user >> getting UnknownHostException


Copy link to this message
-
Re: getting UnknownHostException
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
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB