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https://issues.apache.org/jira/browse/BOOKKEEPER-614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13675996#comment-13675996
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Ivan Kelly commented on BOOKKEEPER-614:
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As long as string constants are used, string comparison will be no slower than
enums, as it does a == check before doing anything else [1].
[1]
http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/lang/String.java#1012
> Generic stats interface, which multiple providers can be plugged into
> ---------------------------------------------------------------------
>
> Key: BOOKKEEPER-614
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-614
> Project: Bookkeeper
> Issue Type: Improvement
> Reporter: Ivan Kelly
> Assignee: Ivan Kelly
> Fix For: 4.3.0
>
> Attachments:
> 0001-BOOKKEEPER-614-Generic-stats-interface-which-multipl.patch
>
>
> Currently we collect stats though JMX. Adding a new stat to JMX is
> cumbersome, and reading the stats out of JMX is painful if you're not on the
> same machine. As a consequence, we aren't measuring a fraction of the stuff
> we should be.
> There are a couple of nice stats packages out there, such as twitter-stats[1]
> and codahale metrics[2], which would make collection of stats much easier.
> This JIRA is to provide a generic interface, which a metrics backend can be
> plugged into.
> [1]
> https://github.com/twitter/commons/tree/master/src/java/com/twitter/common/stats
> [2] http://metrics.codahale.com/
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