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HBase >> mail # user >> Hbase 0.2.6 performance


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Re: Hbase 0.2.6 performance
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 <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
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:[EMAIL PROTECTED]]
Sent: Fri 11/22/2013 11:44 PM
To: [EMAIL PROTECTED]
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 ?

Thanks

On Fri, Nov 22, 2013 at 7:42 AM, Job Thomas <[EMAIL PROTECTED]> 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
>