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From Haosong Huang <haosd...@gmail.com>
Subject Re: hbase read performance tuning failed
Date Tue, 07 Jan 2014 12:28:43 GMT
>but the scan performance is poor.

Did you set start row and end row in the Scan? Besides, if the random read
performance of your cluster is ok, maybe smallscan could help you.
HBASE-9488 <https://issues.apache.org/jira/browse/HBASE-9488>

On Tue, Jan 7, 2014 at 3:06 PM, LEI Xiaofeng <leixf@ihep.ac.cn> wrote:

> Hi,
> I am running hbase-0.94.6-cdh4.5.0 and set up a cluster of 5 nodes. The
> random read performance is ok, but the scan performance is poor.
> I tried to increase "hbase.client.scanner.caching" to 100 to promote the
> scan performance but it made  no difference. And when I tried to make
> smaller blocks by setting "BLOCKSIZE" when created tables to get better
> random read performance it made no difference too.
> So, I am wondering if anyone could give some advice to solve this problem.
> Thanks

Best Regards,
Haosdent Huang

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