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From Varun Kumar <varun....@gmail.com>
Subject Re: java.net.UnknownHostException on one node only
Date Mon, 23 Feb 2015 04:07:15 GMT
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

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