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From Ted Yu <yuzhih...@gmail.com>
Subject Re: HBase -ROOT- is unable to come online
Date Mon, 16 May 2011 03:29:58 GMT
It was due to a missing lib jar which rendered region servers useless.
That's why I suggested checking out region server logs.

On Sun, May 15, 2011 at 8:28 PM, Nathan McC <nemccarthy@gmail.com> wrote:

> Thanks Ted. Id still like to know how you solved this problem, could be
> helpful.
>
> Cheers,
>
>
> --Sent from Windows Mobile
>
> ------------------------------
> From: Ted Yu <yuzhihong@gmail.com>
> Sent: Monday, 16 May 2011 1:03 PM
> To: Nathan McC <nemccarthy@gmail.com>
> Cc: dev@hbase.apache.org
> Subject: Re: HBase -ROOT- is unable to come online
>
> Nathan:
> I didn't run in pseudo-distributed mode.
> Please check region server log which would give you more clue.
>
> Also, please involve user@ or dev@ so that:
> 1. you can get more helping hands
> 2. share your finding with other people.
>
> Have a nice weekend.
>
> On Sun, May 15, 2011 at 7:56 PM, Nathan McC <nemccarthy@gmail.com> wrote:
>
>> Hi Ted,
>>
>> I’m hoping you can help me – I’m having a problem similar to yours with
>> HBase (http://search-hadoop.com/m/50Ekr1n36KU1/v=threaded) , I’m using
>> the Cloudera distro and trying to get Hadoop and HBase running in
>> pseudo-distributed mode.
>>
>> Whenever I try to go to the master server webpage (e.g.
>> http://localhost:60010) it just sits there continually loading.
>>
>> Could you tell me how you solved the problem where -ROOT- is unable to
>> come online.
>>
>> Looking at the logs of the master I see the following:
>>
>> 11/05/15 19:58:27 WARN master.AssignmentManager: Failed assignment of
>> -ROOT-,,0.70236052 to serverName=localhost,60020,1305452402149,
>> load=(requests=0, regions=0, usedHeap=24, maxHeap=995), trying to assign
>> elsewhere instead; retry=0
>> org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed setting up
>> proxy interface org.apache.hadoop.hbase.ipc.HRegionInterface to /
>> 127.0.0.1:60020 after attempts=1 at
>> org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:355) at
>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:957)
>> at
>> org.apache.hadoop.hbase.master.ServerManager.getServerConnection(ServerManager.java:606)
>> at
>> org.apache.hadoop.hbase.master.ServerManager.sendRegionOpen(ServerManager.java:541)
>> at
>> org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:901)
>> at
>> org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:730)
>> at
>> org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:710)
>> at
>> org.apache.hadoop.hbase.master.AssignmentManager$TimeoutMonitor.chore(AssignmentManager.java:1605)
>> at org.apache.hadoop.hbase.Chore.run(Chore.java:66) Caused by:
>> java.net.ConnectException: Connection refused at
>> sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at
>> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567) at
>> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
>> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:408) at
>> org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:328)
>> at
>> org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:883)
>> at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:750) at
>> org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257) at
>> $Proxy6.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) ... 8
>> more
>>
>> 11/05/15 19:58:27 WARN master.AssignmentManager: Unable to find a viable
>> location to assign region -ROOT-,,0.70236052
>>
>> Cheers,
>> Nathan
>>
>>
>> --Sent from Windows Mobile
>>
>
>

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