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From kanwal <kanwal...@gmail.com>
Subject Re: HBase Unable to find Region Server - No Exception being thrown
Date Thu, 10 Apr 2014 05:37:59 GMT
No. Couldn't find any error in the log.


On Wed, Apr 9, 2014 at 10:26 PM, Shengjun Xin [via Apache HBase] <
ml-node+s679495n4058051h23@n3.nabble.com> wrote:

> Does hbase-regionserver log have some error message?
>
>
> On Thu, Apr 10, 2014 at 3:27 AM, kanwal <[hidden email]<http://user/SendEmail.jtp?type=node&node=4058051&i=0>>
> wrote:
>
> > I'm currently running into an issue on my local setup where my
> application
> > is
> > unable to connect to the hbase table but I'm successfully able to query
> the
> > table using hbase shell.
> >
> > I'm using HTable client to make the connection and would expect to get
> an
> > error after certain retries when it's unable to establish connection.
> > However I'm seeing the code is continuously retrying and not logging any
> > error exception. I had to turn on debug to find the issue.
> >
> > Is there a setting that we could use to throw an exception after certain
> > number of retries?
> >
> > countersTable = new HTable(hbaseConfig, counters)
> >
> > Using HBase Version - 0.94.15
> >
> > 14-04-09 12:11:36 DEBUG
> HConnectionManager$HConnectionImplementation:1083 -
> > locateRegionInMeta parentTable=.META., metaLocation=null, attempt=0 of
> 10
> > failed; retrying after sleep of 1000 because: Unable to find region for
> > counter,,99999999999999 after 10 tries.
> > 14-04-09 12:11:37 DEBUG ZKUtil:1597 - hconnection-0x14547b13745000e
> > Retrieved 50 byte(s) of data from znode /hbase/root-region-server and
> set
> > watcher; mseakdang.corp.service-now.co...
> > 14-04-09 12:11:37 DEBUG HConnectionManager$HConnectionImplementation:875
> -
> > Looked up root region location,
> >
> >
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@300b6421
> > ;
> > serverName=mseakdang.corp.service-now.com,60020,1397067169749
> > 14-04-09 12:12:35 DEBUG
> HConnectionManager$HConnectionImplementation:1083 -
> > locateRegionInMeta parentTable=-ROOT-,
> > metaLocation={region=-ROOT-,,0.70236052,
> > hostname=mseakdang.corp.service-now.com, port=60020}, attempt=0 of 10
> > failed; retrying after sleep of 1002 because: unknown host:
> > mseakdang.corp.service-now.com
> > 14-04-09 12:12:35 DEBUG ZKUtil:1597 - hconnection-0x14547b13745000e
> > Retrieved 50 byte(s) of data from znode /hbase/root-region-server and
> set
> > watcher; mseakdang.corp.service-now.co...
> > 14-04-09 12:12:35 DEBUG HConnectionManager$HConnectionImplementation:875
> -
> > Looked up root region location,
> >
> >
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@300b6421
> > ;
> > serverName=mseakdang.corp.service-now.com,60020,1397067169749
> > 14-04-09 12:12:36 DEBUG
> HConnectionManager$HConnectionImplementation:1083 -
> > locateRegionInMeta parentTable=.META., metaLocation=null, attempt=0 of
> 10
> > failed; retrying after sleep of 1008 because: Unable to find region for
> > counter,,99999999999999 after 10 tries.
> > 14-04-09 12:12:37 DEBUG ZKUtil:1597 - hconnection-0x14547b13745000e
> > Retrieved 50 byte(s) of data from znode /hbase/root-region-server and
> set
> > watcher; mseakdang.corp.service-now.co...
> > 14-04-09 12:12:37 DEBUG HConnectionManager$HConnectionImplementation:875
> -
> > Looked up root region location,
> >
> >
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@300b6421
> > ;
> > serverName=mseakdang.corp.service-now.com,60020,1397067169749
> > 14-04-09 12:13:35 DEBUG
> HConnectionManager$HConnectionImplementation:1083 -
> > locateRegionInMeta parentTable=-ROOT-,
> > metaLocation={region=-ROOT-,,0.70236052,
> > hostname=mseakdang.corp.service-now.com, port=60020}, attempt=0 of 10
> > failed; retrying after sleep of 1001 because: unknown host:
> > mseakdang.corp.service-now.com
> > 14-04-09 12:13:35 DEBUG ZKUtil:1597 - hconnection-0x14547b13745000e
> > Retrieved 50 byte(s) of data from znode /hbase/root-region-server and
> set
> > watcher; mseakdang.corp.service-now.co...
> > 14-04-09 12:13:35 DEBUG HConnectionManager$HConnectionImplementation:875
> -
> > Looked up root region location,
> >
> >
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@300b6421
> > ;
> > serverName=mseakdang.corp.service-now.com,60020,1397067169749
> > 14-04-09 12:13:36 DEBUG
> HConnectionManager$HConnectionImplementation:1083 -
> > locateRegionInMeta parentTable=.META., metaLocation=null, attempt=1 of
> 10
> > failed; retrying after sleep of 1000 because: Unable to find region for
> > counter,,99999999999999 after 10 tries.
> >
> >
> >
> > --
> > View this message in context:
> >
> http://apache-hbase.679495.n3.nabble.com/HBase-Unable-to-find-Region-Server-No-Exception-being-thrown-tp4058033.html
> > Sent from the HBase User mailing list archive at Nabble.com.
> >
>
>
>
> --
> Regards
> Shengjun
>
>
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