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From Venkateswara Rao Dokku <dvrao....@gmail.com>
Subject Re: Hbase Clustering
Date Fri, 21 Sep 2012 06:09:17 GMT
I have that entry in the /etc/hosts files. The /etc/hosts files are as
given below.

*Master:*
127.0.0.1       localhost
127.0.1.1       oc-PowerEdge-R610
10.2.32.48  hbase-master hadoop-namenode
10.240.13.64 hbase-regionserver1  hadoop-datanode1
#10.240.13.133 hadoop-datanode1
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

*Slave:*
127.0.0.1       localhost
127.0.1.1       venkat-System-Product-Name
10.2.32.48  hbase-master hadoop-namenode
10.240.13.40 hbase-regionserver1  hadoop-datanode1
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters



On Fri, Sep 21, 2012 at 11:30 AM, Monish r <monishsvce@gmail.com> wrote:

> 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.
> >
> >
>



-- 
Thanks & Regards,
Venkateswara Rao Dokku,
Software Engineer,One Convergence Devices Pvt Ltd.,
Jubille Hills,Hyderabad.

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