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
