Question

我正在评估HBase Multiple master实用程序，因为我需要该功能。我使用了一个简单的4机器hbase集群，M1作为主机。现在我也在M4开始了Hmaster。我可以在M4主日志中看到日志，这个HMaster正在等待，因为M1已经充当了HMaster。

在此之后我在M1中停止了Master，几秒钟之后，M4大师接管了。但我没有看到任何区域服务器与这个新主服务器进行通信。区域服务器日志显示，

2011-10-31 23:21:18,834 WARN org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to connect to master. Retrying. Error was: 
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:404) 
        at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:311) 
        at org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:865) 
        at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:732) 
        at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257) 
        at $Proxy3.getProtocolVersion(Unknown Source) 
        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:419) 
        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:393) 
        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:444) 
        at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:349) 
        at org.apache.hadoop.hbase.regionserver.HRegionServer.getMaster(HRegionServer.java:1443) 
        at org.apache.hadoop.hbase.regionserver.HRegionServer.tryRegionServerReport(HRegionServer.java:737) 
        at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:586) 
        at java.lang.Thread.run(Thread.java:619)

同样在我看到的M4 Master日志中，

2011-10-31 23:20:47,671 INFO org.apache.hadoop.http.HttpServer: listener.getLocalPort() returned 60010 webServer.getConnectors()[0].getLocalPort() returned 60010 
2011-10-31 23:20:47,671 INFO org.apache.hadoop.http.HttpServer: Jetty bound to port 60010 
2011-10-31 23:20:47,671 INFO org.mortbay.log: jetty-6.1.26 
2011-10-31 23:20:48,691 INFO org.mortbay.log: Started SelectChannelConnector@0.0.0.0:60010 
2011-10-31 23:20:48,691 DEBUG org.apache.hadoop.hbase.master.HMaster: Started service threads 
2011-10-31 23:20:50,192 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting on regionserver(s) to checkin 
2011-10-31 23:20:51,695 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting on regionserver(s) to checkin 
2011-10-31 23:20:53,197 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting on regionserver(s) to checkin

看起来区域服务器只与M1 Hmaster通信而不是新的！

我正在使用Hbase - 0.90.0版本

对此有任何帮助，我们非常感谢!!

Answer 1

看起来这对Hbase 0.90.3来说效果很好。需要验证!!

http://old.nabble.com/Hbase-Multiple-Master-issue-td32757197.html#a32758542

Hbase Multiple Master问题

1 个答案: