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Posted to user@hbase.apache.org by Vineet Mishra <cl...@gmail.com> on 2013/12/02 14:51:08 UTC

Merging Hbase Region for a Table

Hi

I have some 2000+ of Auto-Region created which I want to make down to a
less number.
I am using Hbase 0.94, is there a way I can merge the Region without
loosing or dirtying up the data.

Thanks!

Re: Merging Hbase Region for a Table

Posted by Jean-Marc Spaggiari <je...@spaggiari.org>.

Hi Vineet,

You need to put HBase off, but HDFS need to stay on if you want to be able
to access the files in it.

Since I'm using Cloudera Manager I usually just use it to stop HBase, but
from the command line you should be able to do something like
bin/stop-hbase.sh .

Also, don't do this on a production cluster.


2013/12/2 Vineet Mishra <cl...@gmail.com>

> Ok! So can you tell me in the Offline merge, how to put the cluster down?
> Should we stop the HDFS or Region Server, and if so how to achieve that?
>
>
> On Mon, Dec 2, 2013 at 7:34 PM, Jean-Marc Spaggiari <
> jean-marc@spaggiari.org
> > wrote:
>
> > Hi Vineet.
> >
> > For 0.94 you can only offline-merge.
> >
> > http://hbase.apache.org/book/ops.regionmgt.html#ops.regionmgt.merge
> >
> > JM
> >
> >
> > 2013/12/2 Vineet Mishra <cl...@gmail.com>
> >
> > > Hi
> > >
> > > I have some 2000+ of Auto-Region created which I want to make down to a
> > > less number.
> > > I am using Hbase 0.94, is there a way I can merge the Region without
> > > loosing or dirtying up the data.
> > >
> > > Thanks!
> > >
> >
>

Re: Merging Hbase Region for a Table

Posted by Vineet Mishra <cl...@gmail.com>.

Ok! So can you tell me in the Offline merge, how to put the cluster down?
Should we stop the HDFS or Region Server, and if so how to achieve that?


On Mon, Dec 2, 2013 at 7:34 PM, Jean-Marc Spaggiari <jean-marc@spaggiari.org
> wrote:

> Hi Vineet.
>
> For 0.94 you can only offline-merge.
>
> http://hbase.apache.org/book/ops.regionmgt.html#ops.regionmgt.merge
>
> JM
>
>
> 2013/12/2 Vineet Mishra <cl...@gmail.com>
>
> > Hi
> >
> > I have some 2000+ of Auto-Region created which I want to make down to a
> > less number.
> > I am using Hbase 0.94, is there a way I can merge the Region without
> > loosing or dirtying up the data.
> >
> > Thanks!
> >
>

Re: Merging Hbase Region for a Table

Posted by Jean-Marc Spaggiari <je...@spaggiari.org>.

Hi Vineet.

For 0.94 you can only offline-merge.

http://hbase.apache.org/book/ops.regionmgt.html#ops.regionmgt.merge

JM


2013/12/2 Vineet Mishra <cl...@gmail.com>

> Hi
>
> I have some 2000+ of Auto-Region created which I want to make down to a
> less number.
> I am using Hbase 0.94, is there a way I can merge the Region without
> loosing or dirtying up the data.
>
> Thanks!
>