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From Ted Yu <yuzhih...@gmail.com>
Subject Re: deprecating (old) metrics in favor of metrics2 framework
Date Mon, 09 Jul 2012 23:52:32 GMT
Lars:
Do you think 0.96 should only support metrics2 framework ?

Cheers

On Mon, Jul 9, 2012 at 4:47 PM, lars hofhansl <lhofhansl@yahoo.com> wrote:

> Let's not deprecate until the replacement is ready (including docs).
>
> -0
>
>
> -- Lars
>
>
> ----- Original Message -----
> From: Elliott Clark <eclark@stumbleupon.com>
> To: dev@hbase.apache.org
> Cc:
> Sent: Monday, July 9, 2012 2:34 PM
> Subject: Re: deprecating (old) metrics in favor of metrics2 framework
>
> HBASE-6323 has the first Metrics2 implementation that I've gotten to.  We
> will have to add lots of documentation around hadoop-metrics2.properties
> and the jmx locations are not consistent, however Metrics2 is much nicer to
> use for dynamic metrics.
>
> On Mon, Jul 9, 2012 at 12:28 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > If I don't get objection by Friday the 13th @ mid night (PST), I will
> > create a JIRA that marks HBase metric classes that depend on
> > org.apache.hadoop.metrics.* deprecated.
> >
> > Thanks
> >
> > On Mon, Jul 9, 2012 at 9:35 AM, Ted Yu <yuzhihong@gmail.com> wrote:
> >
> > > Thanks for the response, Jon.
> > >
> > > One more detail: the metrics2 classes in hadoop 1.0 and hadoop 2.0 are
> > > different. Alex is working on a shim layer to make the difference
> > > transparent. If we were to keep 0.96 metric (1) compatible, we would be
> > > maintaining 2.5 metric systems.
> > >
> > > Cheers
> > >
> > >
> > > On Mon, Jul 9, 2012 at 9:28 AM, Jonathan Hsieh <jon@cloudera.com>
> wrote:
> > >
> > >> I'm ok if we moved solely to metrics2 in 0.96 and if we deprecated in
> > >> 0.94.
> > >>
> > >> Jon.
> > >>
> > >> On Sat, Jul 7, 2012 at 7:23 AM, Ted Yu <yuzhihong@gmail.com> wrote:
> > >>
> > >> > Hi,
> > >> > See the following comment for background:
> > >> >
> > >> >
> > >>
> >
> https://issues.apache.org/jira/browse/HBASE-4050?focusedCommentId=13408679&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13408679
> > >> >
> > >> > metrics2 framework is in both hadoop 1.0 and hadoop 2.0
> > >> > We would like to migrate to metrics2 framework. But maintaining two
> > >> metrics
> > >> > frameworks in HBase is costly and results in lower readability.
> > >> >
> > >> > However, if you have cluster monitoring tool that depends on (old)
> > >> metrics
> > >> > framework, we want to give you smooth migration experience.
> > >> >
> > >> > Please provide your opinions on whether (old) metrics framework
> should
> > >> be
> > >> > deprecated in 0.94 or in 0.96.
> > >> >
> > >> > Thanks
> > >> >
> > >>
> > >>
> > >>
> > >> --
> > >> // Jonathan Hsieh (shay)
> > >> // Software Engineer, Cloudera
> > >> // jon@cloudera.com
> > >>
> > >
> > >
> >
>
>

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