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From Monish r <monishs...@gmail.com>
Subject Re: Hbase Clustering
Date Fri, 21 Sep 2012 06:00:43 GMT
Hi,
>From the region server log , i can see that region server cannot resolve
the host name *oc-PowerEdge-R610 , *check if u have entry for this hostname*
*in */etc/hosts *file.

2012-09-20 17:18:39,966 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Attempting connect
to Master server at oc-PowerEdge-R610,60000,1348136566220
2012-09-20 17:18:39,966 WARN
org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to connect
to master. Retrying. Error was:
java.net.UnknownHostException: unknown host:* oc-PowerEdge-R610*



On Thu, Sep 20, 2012 at 5:49 PM, Venkateswara Rao Dokku <dvrao.584@gmail.com
> wrote:

>
> please find the attached master & slave hbase logs.
>
>> On Thu, Sep 20, 2012 at 5:14 PM, Monish r <monishsvce@gmail.com> wrote:
>>
>>> Hi,
>>> From the *jps* status i can see that  u have started region server in
>>> both
>>> the servers
>>>
>>> *NameNode:*
>>>
>>> 11578 HMaster
>>> 11476 HQuorumPeer
>>> 10921 TaskTracker
>>> 10246 NameNode
>>> 12430 Main
>>> 10746 JobTracker
>>> 12538 Jps
>>> 11798 *HRegionServer*
>>>
>>> 10618 SecondaryNameNode
>>> 10433 DataNode
>>>
>>> *DataNode:*
>>> 2202 NC
>>> 10772 Jps
>>> 10495 TaskTracker
>>> 2112 -- process information unavailable
>>> 10697 *HRegionServer*
>>>
>>> 10331 DataNode
>>>
>>> From the log i can see that hbase master has only one region server in
>>> its
>>> list and it is not access able.
>>>
>>> 2012-09-18 23:59:13,841 DEBUG
>>> org.apache.hadoop.hbase.master.AssignmentManager: No previous
>>> transition plan was found (or we are ignoring an existing plan) for
>>> -ROOT-,,0.70236052 so generated a random one; hri=-ROOT-,,0.70236052,
>>> src=, dest=localhost,60020,1347968702214; 1 *(online=1, exclude=0)
>>> available servers *
>>>
>>> 2012-09-18 23:59:13,841 INFO org.apache.hadoop.ipc.HBaseRPC: Server at
>>> *localhost/127.0.0.1:60020 could not be reached after 1 tries, giving
>>> up.*
>>>
>>>
>>>
>>> The problem may be with u r cluster set up , check the region server logs
>>> and see if they are alive , u cannot rely on jps
>>> and tell for sure the process is up , since it can go down after u r
>>>  look
>>> up.
>>>
>>> Check u r region server logs , if u still have issues , post the region
>>> server logs in paste bin and reply.
>>>
>>> Regards,
>>> R.Monish
>>>
>>>
>>> *
>>>
>>> *
>>>
>>>
>>>
>>> On Thu, Sep 20, 2012 at 10:03 AM, Venkateswara Rao Dokku <
>>> dvrao.584@gmail.com> wrote:
>>>
>>> >
>>> >
>>> > On Tue, Sep 18, 2012 at 10:43 PM, Jean-Daniel Cryans <
>>> jdcryans@apache.org>wrote:
>>> >
>>> >> What's in the master's log?
>>> >>
>>> >> J-D
>>> >> Please find the attached master logs.
>>> >>
>>> >> On Tue, Sep 18, 2012 at 3:41 AM, Venkateswara Rao Dokku
>>> >> <dvrao.584@gmail.com> wrote:
>>> >> > Hi,
>>> >> >       I am new to Hbase & I wanted to Cluster Hbase on 2 nodes.
I
>>> put
>>> >> one
>>> >> > of my nodes as hadoop-namenodeas well as hbase-master & the
other
>>> node
>>> >> as
>>> >> > hadoop-datanode1 as well as hbase-region-server1. I started hadoop
>>> >> cluster
>>> >> > as well as Hbase on the name-node side. They started fine. But
when
>>> I
>>> >> try
>>> >> > to create tabes in Hbase shell I got the following error.
>>> >> >
>>> >> > hbase(main):001:0> create 't1','f1'
>>> >> >
>>> >> > ERROR: org.apache.hadoop.hbase.MasterNotRunningException: Retried
7
>>> >> times
>>> >> >
>>> >> > Here is some help for this command:
>>> >> > Create table; pass table name, a dictionary of specifications per
>>> >> > column family, and optionally a dictionary of table configuration.
>>> >> > Dictionaries are described below in the GENERAL NOTES section.
>>> >> > Examples:
>>> >> >
>>> >> >   hbase> create 't1', {NAME => 'f1', VERSIONS => 5}
>>> >> >   hbase> create 't1', {NAME => 'f1'}, {NAME => 'f2'},
{NAME => 'f3'}
>>> >> >   hbase> # The above in shorthand would be the following:
>>> >> >   hbase> create 't1', 'f1', 'f2', 'f3'
>>> >> >   hbase> create 't1', {NAME => 'f1', VERSIONS => 1, TTL
=> 2592000,
>>> >> > BLOCKCACHE => true}
>>> >> >   hbase> create 't1', 'f1', {SPLITS => ['10', '20', '30',
'40']}
>>> >> >   hbase> create 't1', 'f1', {SPLITS_FILE => 'splits.txt'}
>>> >> >
>>> >> > But I could see HMaster running with Jps. The below given are the
>>> >> processes
>>> >> > running on the name-node & datanode.
>>> >> > *NameNode:*
>>> >> > *
>>> >> > *
>>> >> > 11578 HMaster
>>> >> > 11476 HQuorumPeer
>>> >> > 10921 TaskTracker
>>> >> > 10246 NameNode
>>> >> > 12430 Main
>>> >> > 10746 JobTracker
>>> >> > 12538 Jps
>>> >> > 11798 HRegionServer
>>> >> > 10618 SecondaryNameNode
>>> >> > 10433 DataNode
>>> >> >
>>> >> > *DataNode:*
>>> >> > *
>>> >> > *
>>> >> > 2202 NC
>>> >> > 10772 Jps
>>> >> > 10495 TaskTracker
>>> >> > 2112 -- process information unavailable
>>> >> > 10697 HRegionServer
>>> >> > 10331 DataNode
>>> >> >
>>> >> > Could You please let me know whats wrong with my approach of
>>> creating
>>> >> > tables. Thanks for replying
>>> >> >
>>> >> > P.S: forgot to mention I am using hadoop-0.20.2 & hbase-0.92.1
>>> >> versions. So
>>> >> > to avoid version mismatches I copied the hadoop Jar file in hadoop
>>> >> > installation directory into habse/lib/ in all the cluster nodes.
>>> >> >
>>> >> >
>>> >> > --
>>> >> > Thanks & Regards,
>>> >> >
>>> >> > Venkateswara Rao Dokku
>>> >>
>>> >
>>> >
>>> >
>>> > --
>>> > Thanks & Regards,
>>> > Venkateswara Rao Dokku,
>>> > Software Engineer,One Convergence Devices Pvt Ltd.,
>>> > Jubille Hills,Hyderabad.
>>> >
>>> >
>>>
>>
>>
>>
>> --
>> Thanks & Regards,
>> Venkateswara Rao Dokku,
>> Software Engineer,One Convergence Devices Pvt Ltd.,
>> Jubille Hills,Hyderabad.
>>
>>
>
>
> --
> Thanks & Regards,
> Venkateswara Rao Dokku,
> Software Engineer,One Convergence Devices Pvt Ltd.,
> Jubille Hills,Hyderabad.
>
>

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