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From Ramakrishna S Vasudevan 00902313 <ramakrish...@huawei.com>
Subject Re: RE: Hbase Multiple Master issue
Date Tue, 01 Nov 2011 13:09:28 GMT
Hi 

If i remember correctly  this issue was fixed in later versions of 0.90.0.
Could you try this in other versions and see if this problem persists..ideally it should not.



Regards
Ram



----- Original Message -----
From: "V.Sriram" <sriram.v@ask.com>
Date: Tuesday, November 1, 2011 3:01 pm
Subject: RE: Hbase Multiple Master issue
To: hbase-user@hadoop.apache.org

> 
> I am using 0.90.0 version
> 
> regards,
> V.Sriram
> 
> 
> Ramkrishna S Vasudevan wrote:
> > 
> > Hi  
> > 
> > What version of HBase are you using?
> > 
> > Regards
> > Ram
> > 
> > 
> > 
> > -----Original Message-----
> > From: V.Sriram [mailto:sriram.v@ask.com] 
> > Sent: Tuesday, November 01, 2011 12:58 PM
> > To: hbase-user@hadoop.apache.org
> > Subject: Hbase Multiple Master issue
> > 
> > 
> > Hi all,
> > 
> > I am evaluating HBase Multiple master utility as I require that
> > funtionality. I used a simple 4 machine hbase cluster with M1 as 
> master.> Now
> > I started the Hmaster in M4 as well. I could see logs in M4 
> Master log as,
> > This HMaster is waiting as already M1 is acting as HMaster.
> > 
> > After this I stopped the Master in the M1 and after few seconds, 
> the M4
> > master took over. But I am not seeing any region server 
> communicating to
> > this new master. The region server logs show,
> > 
> > 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:2> 06)
> >         at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:404)
> >         at
> > 
> org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClien> t.java:311)
> >         at
> > 
> org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:865)>     
   at
> > org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:732)
> >         at
> > 
> org.apache.hadoop.hbase.ipc.HBaseRPC$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.j> ava:1443)
> >         at
> > 
> org.apache.hadoop.hbase.regionserver.HRegionServer.tryRegionServerReport(HRe> gionServer.java:737)
> >         at
> > 
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:58> 6)
> >         at java.lang.Thread.run(Thread.java:619)
> > 
> > Also in the M4 Master log I am seeing,
> > 
> > 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
> > 
> > Seems the region servers are only communicating to the M1 Hmaster 
> and not
> > to
> > the new one!!
> > 
> > Any help regarding this is highly appreciated :handshake:
> > -- 
> > View this message in context:
> > http://old.nabble.com/Hbase-Multiple-Master-issue-
> tp32757197p32757197.html> Sent from the HBase User mailing list 
> archive at Nabble.com.
> > 
> > 
> > 
> 
> -- 
> View this message in context: http://old.nabble.com/Hbase-Multiple-
> Master-issue-tp32757197p32757528.html
> Sent from the HBase User mailing list archive at Nabble.com.
> 
> 

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