This is how /etc/hosts file looks like on HBase master node ubuntu@master:~$ cat /etc/hosts 10.78.21.133 master #10.62.126.245 slave1 #10.154.133.161 slave1 10.224.115.218 slave1 10.32.213.195 slave2
and the code which actually tries to connect is as shown below: hTableInterface=hTablePool.getTable("POINTS_TABLE"); Regards, Chandrash3khar Kotekar Mobile - +91 8600011455 On Wed, Jul 30, 2014 at 6:43 PM, Jean-Marc Spaggiari < jean-m...@spaggiari.org> wrote: > Hi Chandrash, > > What do you have in your /etc/hosts? Can you also share the piece of code > where you are doing the connection to HBase? > > Thanks, > > JM > > > 2014-07-30 7:34 GMT-04:00 Chandrashekhar Kotekar < > shekhar.kote...@gmail.com> > : > > > I have a HBase cluster on AWS. I have written few REST services which are > > supposed to connect to this HBase cluster and get some data. > > > > My configuration is as below : > > > > 1. Java code, eclipse, tomcat running on my desktop > > 2. HBase cluster, Hadoop cluster sitting on AWS > > 3. Can connect to HBase cluster, Hadoop cluster ONLY THROUGH VPN > > > > Whenever web service tries to do ANY operation on HBase, it throws Could > > not resolve the DNS name of slave2:60020 error with following stack > trace. > > > > > > java.lang.IllegalArgumentException: Could not resolve the DNS name of > > slave2:60020 > > at > > > org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105) > > at > > org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:66) > > at > > > org.apache.hadoop.hbase.zookeeper.RootRegionTracker.dataToHServerAddress(RootRegionTracker.java:82) > > at > > > org.apache.hadoop.hbase.zookeeper.RootRegionTracker.waitRootRegionLocation(RootRegionTracker.java:73) > > at > > > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:578) > > at > > > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:558) > > at > > > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:687) > > at > > > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:589) > > > > at > > > org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:129) > > at > > org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:96) > > at com.shekhar.dao.AdminDAO.getAdminInfoByRowKey(AdminDAO.java:63) > > at > com.shekhar.auth.Authorization.isSystemAdmin(Authorization.java:41) > > at > > > com.shekhar.business.ReadingProcessor.getReadingInfo(ReadingProcessor.java:310) > > at > > com.shekhar.services.ReadingService.getReadings(ReadingService.java:543) > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > > > > > > > > > In hbase-site.xml file I have given IP address of HBase master and in > > core-site.xml file IP address of namenode is given. > > > > Has anyone faced this type of problem? Why this problem arises? > > > > I have posted same question on Stack overflow but no one replied hence > > posting question here. > > > > Request you to please help. > > > > > > > > Regards, > > Chandrash3khar Kotekar > > Mobile - +91 8600011455 > > >