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 <[email protected]> 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
