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 <[email protected] > wrote: > > please find the attached master & slave hbase logs. > >> On Thu, Sep 20, 2012 at 5:14 PM, Monish r <[email protected]> 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 < >>> [email protected]> wrote: >>> >>> > >>> > >>> > On Tue, Sep 18, 2012 at 10:43 PM, Jean-Daniel Cryans < >>> [email protected]>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 >>> >> <[email protected]> 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. > >
