HBase - is it time to add another node?

[Ronen Itkin <ro...@taykey.com>]

Hey all,

I have a small cluster of HBase, Hadoop HDFS, Zookeeper that is being
deployed on the same nodes (kind of a common best practice for small
clusters).
Everything is quite straight forward and works fine.

I am wondering how can I efficiently predict the right time to add another
node from the HBase performance (read/write) perspective ?
Is there any suggested amount of regions per region server I should follow?
number of requests per region service? any other "load" parameters?

So as long as the data keeps increasing, I guess performance will be
decreasing.
moreover. I find it hard to answer the question of "when should I add
another Hbase node?" because performance decrease can be caused by other
reasons
like "hots pots" for example, which demand a special care what not another
node.

Suggestions?

Thank you all!!

-- 
*
Ronen Itkin*
Taykey | www.taykey.com

Re: HBase - is it time to add another node?

[Doug Meil <do...@explorysmedical.com>]

Hi there-

You probably want to see the Hbase Book/RefGuide and the Performance and
Operational Mgt chapters.  Capture and track metrics in tools like
OpenTSDB, for example.

http://hbase.apache.org/book.html




On 1/10/12 8:34 AM, "Ronen Itkin" <ro...@taykey.com> wrote:

>Hey all,
>
>I have a small cluster of HBase, Hadoop HDFS, Zookeeper that is being
>deployed on the same nodes (kind of a common best practice for small
>clusters).
>Everything is quite straight forward and works fine.
>
>I am wondering how can I efficiently predict the right time to add another
>node from the HBase performance (read/write) perspective ?
>Is there any suggested amount of regions per region server I should
>follow?
>number of requests per region service? any other "load" parameters?
>
>So as long as the data keeps increasing, I guess performance will be
>decreasing.
>moreover. I find it hard to answer the question of "when should I add
>another Hbase node?" because performance decrease can be caused by other
>reasons
>like "hots pots" for example, which demand a special care what not another
>node.
>
>Suggestions?
>
>Thank you all!!
>
>-- 
>*
>Ronen Itkin*
>Taykey | www.taykey.com