HBase问题之master链接到regionserver不能连接问题

HBase按照分布式方式部署后，在regionservers中配置了如下：

10.1.30.11

但在hbase shell命令下创建表报master 正在初始化异常，查看master下hbase-root-master-hostname.log

日志中报如下异常：

org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed setting up proxy interface org.apache.hadoop.hbase.ipc.HRegionInterface to /10.1.30.11:60020 after attempts=1

        at org.apache.hadoop.hbase.ipc.HBaseRPC.handleConnectionException(HBaseRPC.java:291)
        at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:259)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1294)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1250)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1237)
        at org.apache.hadoop.hbase.master.ServerManager.getServerConnection(ServerManager.java:550)
        at org.apache.hadoop.hbase.master.ServerManager.sendRegionOpen(ServerManager.java:483)
        at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1634)
        at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1358)
        at org.apache.hadoop.hbase.master.AssignCallable.call(AssignCallable.java:44)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
        at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
        at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:489)
        at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupConnection(HBaseClient.java:328)
        at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:362)
        at org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:1046)
        at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:898)
        at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:150)
        at $Proxy11.getProtocolVersion(Unknown Source)
        at org.apache.hadoop.hbase.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:183)
        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:335)
        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:312)
        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:364)
        at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:236)

        ... 13 more

解决方法:

在不能够链接到的regionserver服务器上，通过hostname 10.1.30.11把主机名修改下，然后重新启动hbase集群，即可