Re: Hbase single-Node cluster config problem

Fri, 01 Aug 2008 14:59:16 -0700 

Yabo-Arber Xu wrote:

Hi J-D,

Thanks, J-D. I cleaned HDFS directory and re-run it. It's fine now.

Wondered if there is any documents out there showing how to expand such one-
computer-with all-servers structure to a truely distributed one but without
re-importing all the data?
Not that I know of. Would suggest you try adding datanodes first. Once you have your HDFS distributed successfully, then add regionservers. Should be straight forward enough. Write here if you run into any issues or you figure out something generally applicable. Good luck. 
St.Ack


Thanks again,
Arber

On Fri, Aug 1, 2008 at 6:13 AM, Jean-Daniel Cryans <[EMAIL PROTECTED]>wrote:


Yair,

It seems that your master is unable to communicate with HDFS (that's the
SocketTimeoutException). To correct this, I would check that HDFS is
running
by looking at the web UI, I would make sure that the ports are open (using
telnet for example) and I would also check that HDFS uses the default
ports.

J-D

On Fri, Aug 1, 2008 at 5:40 AM, Yabo-Arber Xu <[EMAIL PROTECTED]

wrote:
Greetings, 

I am trying to set up a hbase cluster. To simplify the setting, i first
tried the single node cluster, where HDFS name/data node are set on one
computer, and hbase master/regionserver are also set on the same

computer.

The HDFS passed the test and works well. But, for hbase, when I try to
create a table using hbase shell. It keeps popping the following message:

08/08/01 02:30:29 INFO ipc.Client: Retrying connect to server:
ec2-67-202-24-167.compute-1.amazonaws.com/10.254.199.132:60000. Already
tried 1 time(s).

I checked the hbase log, and it has the following error:

2008-08-01 02:30:24,337 ERROR org.apache.hadoop.hbase.HMaster: Can not
start
master
java.lang.reflect.InvocationTargetException
       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
       at



sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

       at



sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

       at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
       at org.apache.hadoop.hbase.HMaster.doMain(HMaster.java:3313)
       at org.apache.hadoop.hbase.HMaster.main(HMaster.java:3347)
Caused by: java.net.SocketTimeoutException: timed out waiting for rpc
response
       at org.apache.hadoop.ipc.Client.call(Client.java:514)
       at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:198)
       at org.apache.hadoop.dfs.$Proxy0.getProtocolVersion(Unknown

Source)

       at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:291)
       at
org.apache.hadoop.dfs.DFSClient.createNamenode(DFSClient.java:128)
       at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:151)
       at



org.apache.hadoop.dfs.DistributedFileSystem.initialize(DistributedFileSystem.java:65)

       at
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1182)
       at org.apache.hadoop.fs.FileSystem.access$300(FileSystem.java:55)
       at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1193)
       at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:150)


For your information, i also attach the hbase-site.xml:

 <property>
   <name>hbase.master</name>
   <value>ec2-67-202-24-167.compute-1.amazonaws.com:60000</value>
   <description>The host and port that the HBase master runs at.
   </description>
 </property>

 <property>
   <name>hbase.rootdir</name>
   <value>hdfs://ec2-67-202-24-167.compute-1.amazonaws.com:9000/hbase
</value>
   <description>The directory shared by region servers.
   </description>
 </property>

Can anybody point out what i did wrong?

Thanks in advance

-Arber

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