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From "tesmai4@gmail.com" <tesm...@gmail.com>
Subject Re: java.net.UnknownHostException on one node only
Date Wed, 25 Feb 2015 16:58:15 GMT
Thanks Varun,

/etc/hosts is correct, there is entry for host (101-master10 with its IP
address) causing unknownHostException.



On Wed, Feb 25, 2015 at 4:21 PM, Varun Kumar <varun.uid@gmail.com> wrote:

> 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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