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Cc: "dev@hbase.apache.org" <dev@hbase.apache.org>
From: Andrew Purtell <andrew.purtell@gmail.com>
Subject: Re: Metrics in 0.96
Date: Fri, 29 Jun 2012 17:31:10 -0700
To: "dev@hbase.apache.org" <dev@hbase.apache.org>

Metrics2 is in both Hadoop 1 and 2. (?)

But my thing was the latter point below anyhow.=20

On Jun 29, 2012, at 1:53 PM, Elliott Clark <eclark@stumbleupon.com> wrote:

> 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 alread=
y
> have a MeticsHistogram I think pulling the code into hbase may be the righ=
t
> choice.
>=20
> On Fri, Jun 29, 2012 at 1:15 PM, Andrew Purtell <apurtell@apache.org> wrot=
e:
>=20
>> On Fri, Jun 29, 2012 at 1:10 PM, Alex Baranau <alex.baranov.v@gmail.com>
>> wrote:
>>> Meanwhile I suggested taking on this one:
>>> https://issues.apache.org/jira/browse/HBASE-4050 separately/first. What
>> do
>>> you think?
>>=20
>> +1
>>=20
>> In related discussion, it looks to me like Stack thinks pulling in the
>> histogram accuracy improvement work via metrics2 is a good idea.
>>=20
>> 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.
>>=20
>>=20
>> Best regards,
>>=20
>>   - Andy
>>=20
>> Problems worthy of attack prove their worth by hitting back. - Piet
>> Hein (via Tom White)
>>=20