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From lars hofhansl <la...@apache.org>
Subject Re: Hbase 0.2.6 performance
Date Mon, 25 Nov 2013 04:06:33 GMT
Not sure when that was added, that was long before my time, but can you disable Nagle's? (i.e.
enabled tcpnodelay for both HBase and HDFS - search these mailing lists for how to do that)

If your table is 50 records you're not measuring HBase you are measuring your network :)
I would suggest you test with a few million rows. When you scan make sure you use scanner
caching. (Scan.setCaching)

-- Lars

 From: Job Thomas <jobt@suntecgroup.com>
To: user@hbase.apache.org 
Sent: Sunday, November 24, 2013 7:45 PM
Subject: RE: Hbase 0.2.6 performance

Hi Ted, 

Thank you for the response.

      For testing Hbase 0.20.6 am used Hadoop 0.20.2,  and for testing  HBase  0.94.12
, used   Hadoop 1.0.4 . 
     I am used default parameters for testing both these version.
     My table is very small ( 50 or less records).
     Another question:  Can I get multy Threading , while querying hbase using Phoenix.

Best Regards,
Job M Thomas


From: Ted Yu [mailto:yuzhihong@gmail.com]
Sent: Fri 11/22/2013 11:44 PM
To: user@hbase.apache.org
Subject: Re: Hbase 0.2.6 performance

bq. and hadoop 1.0.4

Were you using the same hadoop version for testing 0.20.6 ?

Please consider using hadoop 1.2.1 for testing. See HBASE-9799 Change
Hadoop 1.2 dependency to 1.2.1

I assume you used default parameters for 0.94.12
How about 0.20.6 - did you tune parameters for that ?

Were you loading data into the same table at the time of performing query
testing ?


On Fri, Nov 22, 2013 at 7:42 AM, Job Thomas <jobt@suntecgroup.com> wrote:

> Hi ,
> I am getting the query performance in
> Hbase 0.20.6 and hadoop 0.20.2  around  0.002 sec(2 millisec)
> but in Hbase 0.94.12 and hadoop 1.0.4  around 0.02 sec(20 millisec) ,
> considerably very less as compared to the first combination.
> I want to use phoenix and that requires hbase0.94.X and greater. but
> performance of hbase0.94.x versions are very less.
> Please let me know what will be the reason. or How can we increase the
> performance of latest hbase versions.
> With Thanks,
> Job M Thomas
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