I ran my job while regionservers stop loading regions.
All regionservers almost got the equal amount of regions.
OK, I'll try to shrink my region server to 5 and 3.
Fleming Chiu(邱宏明)
707-6128
y_823...@tsmc.com
週一無肉日吃素救地球(Meat Free Monday Taiwan)
Stack
<saint....@gmail. To:
"hbase-user@hadoop.apache.org" <hbase-user@hadoop.apache.org>
com> cc: (bcc: Y_823910/TSMC)
Subject: Re: The occasion to add
region server
2010/03/24 09:40
AM
Please respond to
hbase-user
You saw no difference. Before starting job all regionservers had equal
amount of regions. Were regionservers loaded while the job ran. Try
with 5 regionservers. If same for sure something is of.
On Mar 23, 2010, at 6:02 PM, y_823...@tsmc.com wrote:
> Hi,
> Our cluster with 20 machines(4 core, 12G Ram, 1U server)
> HBase Version 0.20.2, r834515
> --------------------------------------------
> ZK : 3
> DataNode : 20
> Total Region : 2088
> Region Server : 10 <<--
> Client Connection: 20
> My job took time : 1264 sec
> --------------------------------------------
> ZK : 3
> DataNode : 20
> Total Region : 2088
> Region Server : 15 <<--
> Client Connection: 20
> My job took time : 1257 sec
> --------------------------------------------
> ZK : 3
> DataNode : 20
> Total Region : 2088
> Region Server : 20 <<--
> Client Connection: 20
> My job took time : 1267 sec
>
> According to the above result, it didn't get the performance enhance
> after
> adding region servers.
> why?
> I wonder when is the best occasion to add extra region server.
> In my machine's spec ,maybe a region server will always get a good
> performance with regions under 300.
> Any ideas, thanks.
>
>
>
>
> Fleming Chiu(邱宏明)
> 707-6128
> y_823...@tsmc.com
> 週一無肉日吃素救地球(Meat Free Monday Taiwan)
>
>
> ---
> ---
> ---------------------------------------------------------------------
> TSMC PROPERTY
> This email communication (and any attachments) is proprietary
> information
> for the sole use of its
> intended recipient. Any unauthorized review, use or distribution by
> anyone
> other than the intended
> recipient is strictly prohibited. If you are not the intended
> recipient,
> please notify the sender by
> replying to this email, and then delete this email and any copies of
> it
> immediately. Thank you.
> ---
> ---
> ---------------------------------------------------------------------
>
>
>
---------------------------------------------------------------------------
TSMC PROPERTY
This email communication (and any attachments) is proprietary information
for the sole use of its
intended recipient. Any unauthorized review, use or distribution by anyone
other than the intended
recipient is strictly prohibited. If you are not the intended recipient,
please notify the sender by
replying to this email, and then delete this email and any copies of it
immediately. Thank you.
---------------------------------------------------------------------------
