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From "Jamie Grier (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1502) Expose metrics to graphite, ganglia and JMX.
Date Thu, 18 Feb 2016 19:03:25 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15152873#comment-15152873
] 

Jamie Grier commented on FLINK-1502:
------------------------------------

[~eastcirclek] Yes, I believe it does.  It's implicit in the metric type that get's reported
to Ganglia.  I believe what we want is Slope.POSITIVE for counters.  I imagine the  Dropwizard
metrics library would already do this correctly for metrics with type Counter (as opposed
to gauge) -- but maybe not.

See here:  http://codeblog.majakorpi.net/post/16281432462/ganglia-xml-slope-attribute

Also, is there no query language in Ganglia when building a graph that allows you graph the
rate of change rather than the actual metric?  I'm not too familiar with Ganglia.

> Expose metrics to graphite, ganglia and JMX.
> --------------------------------------------
>
>                 Key: FLINK-1502
>                 URL: https://issues.apache.org/jira/browse/FLINK-1502
>             Project: Flink
>          Issue Type: Sub-task
>          Components: JobManager, TaskManager
>    Affects Versions: 0.9
>            Reporter: Robert Metzger
>            Assignee: Dongwon Kim
>            Priority: Minor
>             Fix For: pre-apache
>
>
> The metrics library allows to expose collected metrics easily to other systems such as
graphite, ganglia or Java's JVM (VisualVM).



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