+user@, dev@ to bcc Pubudu,
I think you'll get more help on an issue like this on the users list. -Dima ---------- Forwarded message ---------- From: Ted Yu <yuzhih...@gmail.com> Date: Fri, Jul 17, 2015 at 5:40 AM Subject: Re: Hbase Fully distribution mode - Cannot resolve regionserver hostname To: "d...@hbase.apache.org" <d...@hbase.apache.org> Have you looked at HBASE-12954 Ability impaired using HBase on multihomed hosts Cheers On Fri, Jul 17, 2015 at 3:32 AM, Pubudu Gunatilaka <pubudu...@gmail.com> wrote: > Hi Devs, > > I am trying to run Hbase in fully distributed mode. So first I started > master node. Then I started regionserver. But I am getting following error. > > 2015-07-17 05:12:02,260 WARN [pod-35:16020.activeMasterManager] > master.AssignmentManager: Failed assignment of hbase:meta,,1.1588230740 to > pod-36,16020,1437109916288, trying to assign elsewhere instead; try=1 of 10 > java.net.UnknownHostException: unknown host: pod-36 > at > > org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.<init>(RpcClientImpl.java:296) > at > > org.apache.hadoop.hbase.ipc.RpcClientImpl.createConnection(RpcClientImpl.java:129) > at > > org.apache.hadoop.hbase.ipc.RpcClientImpl.getConnection(RpcClientImpl.java:1278) > at org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1152) > at > > org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:216) > at > > org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:300) > at > > org.apache.hadoop.hbase.protobuf.generated.AdminProtos$AdminService$BlockingStub.openRegion(AdminProtos.java:21711) > at > > org.apache.hadoop.hbase.master.ServerManager.sendRegionOpen(ServerManager.java:712) > at > > org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:2101) > at > > org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1567) > at > > org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1545) > at > > org.apache.hadoop.hbase.master.AssignmentManager.assignMeta(AssignmentManager.java:2630) > at org.apache.hadoop.hbase.master.HMaster.assignMeta(HMaster.java:820) > at > > org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:685) > at org.apache.hadoop.hbase.master.HMaster.access$500(HMaster.java:165) > at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1428) > at java.lang.Thread.run(Thread.java:745) > > > This error occurs as the master node cannot resolve the hostname of the > regionserver. According to the requirement of mine, I want to automate the > hbase installation with 1 master node and 4 regionservers. But at the > moment I don't have any possibility of updating master's /etc/hosts file. > From the hbase configuration side, will I be able to solve the problem? > > If the hbase can communicate with IP addresses or use the hostname, which > is already sent by regionserver to the master without updating /etc/hosts > file this issue can be solved. Similar approach can be found in hadoop as > well. Once the datanode connects to the namenode, it can communicate with > the datanode without updating /etc/hosts file. > > Any help on this is appreciated. > > Thank you! > > -- > > *Pubudu Gunatilaka* >
