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POhbase.HServerAddress: Could not resolve the DNS name of slave1 : hostname can't be null
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  1. POhbase.HServerAddress: Could not resolve the DNS name of slave1 : hostname can't be null
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    copied!<p>Do anyone know why this error appears?... The code was working before but now it is not working in my system but works in other systems successfully. The error log is as below... Please help me...</p> <p>I think there may have any version incompatibilities... But I don't know what exactly is?... </p> <pre><code> 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:zookeeper.version=3.3.1-942149, built on 05/07/2010 17:14 GMT 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:host.name=User-PC 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.version=1.7.0 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.vendor=Oracle Corporation 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.home=C:\Program Files\Java\jdk1.7.0\jre 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.class.path=D:\apache-tomcat-7.0.30\bin\bootstrap.jar;D:\apache-tomcat-7.0.30\bin\tomcat-juli.jar 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.library.path=C:\Program Files\Java\jdk1.7.0\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\TortoiseSVN\bin;D:\apache-maven-3.0.4\bin;. 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.io.tmpdir=D:\apache-tomcat-7.0.30\temp 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:java.compiler=&lt;NA&gt; 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:os.name=Windows 7 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:os.arch=x86 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:os.version=6.1 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:user.name=User 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:user.home=C:\Users\User 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Client environment:user.dir=D:\apache-tomcat-7.0.30\bin 12/10/18 14:21:59 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=192.168.1.240:2222 sessionTimeout=180000 watcher=hconnection 12/10/18 14:21:59 INFO zookeeper.ClientCnxn: Opening socket connection to server /192.168.1.240:2222 12/10/18 14:22:00 INFO zookeeper.ClientCnxn: Socket connection established to JAI-3/192.168.1.240:2222, initiating session 12/10/18 14:22:00 INFO zookeeper.ClientCnxn: Session establishment complete on server JAI-3/192.168.1.240:2222, sessionid = 0x13a6d1375aa0244, negotiated timeout = 40000 12/10/18 14:22:02 ERROR hbase.HServerAddress: Could not resolve the DNS name of slave1 java.lang.IllegalArgumentException: hostname can't be null Error while establishing connection to HBASE at java.net.InetSocketAddress.&lt;init&gt;(InetSocketAddress.java:139) at org.apache.hadoop.hbase.HServerAddress.getResolvedAddress(HServerAddress.java:108) at org.apache.hadoop.hbase.HServerAddress.&lt;init&gt;(HServerAddress.java:64) at org.apache.hadoop.hbase.MasterAddressTracker.getMasterAddress(MasterAddressTracker.java:63) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getMaster(HConnectionManager.java:354) at org.apache.hadoop.hbase.client.HBaseAdmin.&lt;init&gt;(HBaseAdmin.java:94) at com.wlu.orm.hbase.connection.HBaseConnection.&lt;init&gt;(HBaseConnection.java:28) at com.project.common.HBaseConnectionWrapper.&lt;init&gt;(HBaseConnectionWrapper.java:31) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:525) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:110) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:280) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1035) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:939) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:384) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:650) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1582) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) </code></pre>
 

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