I'm excited about the new accurate histogram, however I don't think that we'll get it when we move to metrics2. Any direct usage would break backward compat for all older hadoop installs. For backwards compatibility on hadoop versions we will either have to create a shim layer with reflection, or pull the code in. Since we already have a MeticsHistogram I think pulling the code into hbase may be the right choice.
On Fri, Jun 29, 2012 at 1:15 PM, Andrew Purtell <apurt...@apache.org> wrote: > On Fri, Jun 29, 2012 at 1:10 PM, Alex Baranau <alex.barano...@gmail.com> > wrote: > > Meanwhile I suggested taking on this one: > > https://issues.apache.org/jira/browse/HBASE-4050 separately/first. What > do > > you think? > > +1 > > In related discussion, it looks to me like Stack thinks pulling in the > histogram accuracy improvement work via metrics2 is a good idea. > > Independent of this something I would like to be able to do is log > metrics to a file as well as Ganglia concurrently, and metrics2 can do > that. > > > Best regards, > > - Andy > > Problems worthy of attack prove their worth by hitting back. - Piet > Hein (via Tom White) >
