Make sure you have zookeeper running correctly and then try to restart HBase.
Try to use "hbase hbck -fix" to fix the potential problems.
Also, habse master log and hbase regionserver log may have good pointers to the root of the problem.
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On Mar 8, 2013, at 9:25 AM, rajesh babu chintaguntla wrote:
> Hi Charan,
> Its may be because of some zookeeper issues (like session timeout) while
> splitting hlog.
> The problem could be https://issues.apache.org/jira/browse/HBASE-7034
> Its recently fixed in 0.94 version as well.
> On Fri, Mar 1, 2013 at 2:03 PM, charan raj <[EMAIL PROTECTED]> wrote:
>> I am currently using a 5 node cluster configured in amazon.The namenode
>> and secondary namenode or in different node. I have shut down the cluster
>> in amazon instance directly without shuting down hbase and hadoop,But when
>> i started the amazon instance, here is the problem am facing with hbase am
>> not able to scan the data present in hbase table and below are the error
>> that is generated with hbck,masterlog and zookeeper log.
>> hbase/logs masterlog
>> ==================>> error while splitting logs in
>> installed = 1 but only 0 done
>> Task = installed = 1 done = 0 error = 1
>> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:336)
>> at java.lang.Thread.run(Thread.java:722)
>> hbase/logs zookeeper log
>> ========================>> 2013-03-01 07:12:53,000 INFO
>> org.apache.zookeeper.server.PrepRequestProcessor: Got user-level
>> KeeperException when processing sessionid:0x13d214fae680005 type:setData
>> cxid:0x1c6f zxid:0x49ac txntype:-1 reqpath:n/a Error
>> Error:KeeperErrorCode = BadVersion for
>> bin/hbase hbck error
>> ==================>> Version: 0.92.1
>> 13/03/01 07:15:17 DEBUG
>> client.HConnectionManager$HConnectionImplementation: Lookedup root region
>> serverName>> ERROR: Root Region or some of its attributes are null.
>> ERROR: Encountered fatal error. Exiting...
>> I tried hbck -fix and other options which will repair meta but it is of no
>> use,can any one help me in solving this issue...........