It seems that if we want to make that switch 0.96 (the singularity) should be release. Sorry, I should give a clear vote. +1 on metrics2 in 0.96 only (if we're ready by then of course)
________________________________ From: Ted Yu <[email protected]> To: [email protected]; lars hofhansl <[email protected]> Sent: Monday, July 9, 2012 4:52 PM Subject: Re: deprecating (old) metrics in favor of metrics2 framework Lars: Do you think 0.96 should only support metrics2 framework ? Cheers On Mon, Jul 9, 2012 at 4:47 PM, lars hofhansl <[email protected]> wrote: Let's not deprecate until the replacement is ready (including docs). > >-0 > > >-- Lars > > > >----- Original Message ----- >From: Elliott Clark <[email protected]> >To: [email protected] >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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 >> >> // [email protected] >> >> >> > >> > >> > >
