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From Varun Kumar <varun....@gmail.com>
Subject Re: java.net.UnknownHostException on one node only
Date Wed, 25 Feb 2015 16:21:10 GMT
In /etc/hosts

Regards,
Varun

On Wed, Feb 25, 2015 at 9:38 AM, tesmai4@gmail.com <tesmai4@gmail.com>
wrote:

> Thanks Varun,
>
> Where shall I check to resolve it?
>
>
> Regards,
> Tariq
>
> On Mon, Feb 23, 2015 at 4:07 AM, Varun Kumar <varun.uid@gmail.com> wrote:
>
>> Hi Tariq,
>>
>> Issues looks like DNS configuration issue.
>>
>>
>> On Sun, Feb 22, 2015 at 3:51 PM, tesmai4@gmail.com <tesmai4@gmail.com>
>> wrote:
>>
>>> I am getting java.net.UnknownHost exception continuously on one node
>>> Hadoop MApReduce execution.
>>>
>>> That node is accessible via SSH. This node is shown in "yarn node -list"
>>> and "hadfs dfsadmin -report" queries.
>>>
>>> Below is the log from execution....
>>>
>>> 15/02/22 20:17:42 INFO mapreduce.Job: Task Id :
>>> attempt_1424622614381_0008_m_000043_0, Status : FAILED
>>> Container launch failed for container_1424622614381_0008_01_000016 :
>>> java.lang.IllegalArgumentException: *java.net.UnknownHostException:
>>> 101-master10*
>>> at
>>> org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:373)
>>> at
>>> org.apache.hadoop.security.SecurityUtil.setTokenService(SecurityUtil.java:352)
>>> at
>>> org.apache.hadoop.yarn.util.ConverterUtils.convertFromYarn(ConverterUtils.java:237)
>>> at
>>> org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy$ContainerManagementProtocolProxyData.newProxy(ContainerManagementProtocolProxy.java:218)
>>> at
>>> org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy$ContainerManagementProtocolProxyData.<init>(ContainerManagementProtocolProxy.java:196)
>>> at
>>> org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy.getProxy(ContainerManagementProtocolProxy.java:117)
>>> at
>>> org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl.getCMProxy(ContainerLauncherImpl.java:403)
>>> at
>>> org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl$Container.launch(ContainerLauncherImpl.java:138)
>>> at
>>> org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl$EventProcessor.run(ContainerLauncherImpl.java:369)
>>> at
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>> at
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>> at java.lang.Thread.run(Thread.java:745)
>>> *Caused by: java.net.UnknownHostException: 101-master10*
>>> ... 12 more
>>>
>>>
>>>
>>> 15/02/22 20:17:44 INFO
>>>
>>> Regards,
>>> Tariq
>>>
>>
>>
>>
>> --
>> Regards,
>> Varun Kumar.P
>>
>
>


-- 
Regards,
Varun Kumar.P

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