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....@gmail.com> wrote: > In /etc/hosts > > Regards, > Varun > > On Wed, Feb 25, 2015 at 9:38 AM, tesm...@gmail.com <tesm...@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....@gmail.com> wrote: >> >>> Hi Tariq, >>> >>> Issues looks like DNS configuration issue. >>> >>> >>> On Sun, Feb 22, 2015 at 3:51 PM, tesm...@gmail.com <tesm...@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 >
