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From Jean-Daniel Cryans <jdcry...@apache.org>
Subject Re: is it possible to view the number of hfiles a GET touches in hbase?
Date Fri, 10 Aug 2012 18:11:45 GMT
This won't be possible until we add tracing in HBase. It's being
worked on here: https://issues.apache.org/jira/browse/HBASE-6449

J-D

On Fri, Aug 10, 2012 at 4:17 AM, Richard Tang <tristartom.tech@gmail.com> wrote:
> Hi,
> Given a GET() operation, I want to monitor the number of on-disk hfiles it
> touches? GET() may need to
> check every in-memory hfiles (block index),  but don't need to touch every
> on-disk parts of hfiles. I want to know
> how many disk hfile a GET() accesses, that is, how many disk IO a GET() end
> up with...
>
> is it possible to obtain this information without hack into hbase source
> code?
> Richard

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