On Fri, Feb 5, 2010 at 1:11 PM, Gabriel Ki wrote:
>
> I was doing similar performance evaluation against hbase 0.20.3 hadoop
> 0.20.1. I did not get as good sequential read as that and would like to
> know the interesting fact what has changed from 0.19.0RC1 to 0.20.x to make
> that improvement.
One tunable is the scanner caching, which is available in this call:
http://hadoop.apache.org/hbase/docs/r0.20.3/api/org/apache/hadoop/hbase/client/HTable.html#setScannerCaching(int)
-ryan
On Fri, Feb 5, 2010 at 1:11 PM, Gabriel Ki wrote:
> In page 3 of
> http://www.slideshare.net/schubertzhang/
In page 3 of
http://www.slideshare.net/schubertzhang/hbase-0200-performance-evaluation,
for 0.20.0
random reads: 1106, sequential reads: 5433. It is about 1 to 5.
In the wiki, http://wiki.apache.org/hadoop/Hbase/PerformanceEvaluation, for
0.19.0RC1
random reads: 540, sequential reads: 464. It is
On Wed, Feb 3, 2010 at 3:58 PM, Gabriel Ki wrote:
> Hi,
>
> I was reading
> http://www.slideshare.net/schubertzhang/hbase-0200-performance-evaluation.
> Could someone explain what has changed to improve the random reads to
> sequential reads ratio from 1:1 to 1:5? I don't seem to reproduce such g
Hi,
I was reading
http://www.slideshare.net/schubertzhang/hbase-0200-performance-evaluation.
Could someone explain what has changed to improve the random reads to
sequential reads ratio from 1:1 to 1:5? I don't seem to reproduce such good
sequential reads.
http://wiki.apache.org/hadoop/Hbase/Per
