unable to start regionservers on slaves in hbase

[amsal <am...@yahoo.com>]

i have a problem starting regionservers on slave pc,s. when i enlist only
master pc in conf/regionservers every thing works fine but when i add two
more slaves to it the hbase does not start ..... if i delete all hbase
folders in the tmp folder from all pc,s and then start regionserver (with 3
regionservers enlisted)the hbase gets started but when i try to create a
table it again fails(gets stuck).... pls anyone help i am using hadoop
0.20.0 which is working fine and hbase 0.92.0 i have 3 pc's in cluster(all
running windows xp) one master and two slaves

also tell that is DNS (both forward and backward lookup working)necessary
for hbase in my case???? is there any way to replicate hbase table to all
region servers i.e. i want to have a copy of table at each pc and want to
access them locally(when i execute map task they should use their local copy
of hbase table) plz help..!! thanx in advance

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Re: unable to start regionservers on slaves in hbase

[Stack <st...@duboce.net>]

On Thu, Apr 12, 2012 at 12:50 AM, amsal <am...@yahoo.com> wrote:
>
> i have a problem starting regionservers on slave pc,s. when i enlist only
> master pc in conf/regionservers every thing works fine but when i add two
> more slaves to it the hbase does not start ..... if i delete all hbase
> folders in the tmp folder from all pc,s and then start regionserver (with 3
> regionservers enlisted)the hbase gets started but when i try to create a
> table it again fails(gets stuck).... pls anyone help i am using hadoop
> 0.20.0 which is working fine and hbase 0.92.0 i have 3 pc's in cluster(all
> running windows xp) one master and two slaves
>

HBase will not work w/ hadoop 0.20.0.  See hbase requirements:
http://hbase.apache.org/book.html#configuration

What are the errors you are seeing?

> also tell that is DNS (both forward and backward lookup working)necessary
> for hbase in my case???? is there any way to replicate hbase table to all
> region servers i.e. i want to have a copy of table at each pc and want to
> access them locally(when i execute map task they should use their local copy
> of hbase table) plz help..!! thanx in advance
>

Thats not how it works.  See the reference guide cited above.

St.Ack