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From Asaf Mesika <asaf.mes...@gmail.com>
Subject Re: HBase Unable to find Region Server - No Exception being thrown
Date Fri, 11 Apr 2014 06:41:30 GMT
There is a property you can tune to lower default num of retries from 10 to
any number like 2.

On Wednesday, April 9, 2014, kanwal <kanwal239@gmail.com> 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.
>

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