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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1502) Expose metrics to graphite, ganglia and JMX.
Date Wed, 18 May 2016 16:46:13 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15289290#comment-15289290

ASF GitHub Bot commented on FLINK-1502:

Github user zentol commented on the pull request:

    I've had an offline chat with @StephanEwen and as a result updated the PR.
    List of changes:
    * dropped Meters, Histograms and Timers
     * we weren't convinced that the performance of the implementation used is efficient enough
for our use-cases
     * removed Reservoir/Snapshot and various wrapper classes
    * moved ScheduledDropWizardReporter into a new flink-metrics-dropwizard module within
     * removes Dropwizard usage entirely from flink-core
    * the MetricRegistry no longer maintains maps of all metrics; reporters are from now on
responsible for doing this
     * Listener interface was removed
     * AbstractReporter class was added that implements this behaviour
     * will make it easier to support multiple reporters in the future
    * Counter and Gauge no longer implement the DropWizard interface
     * added Counter-/GaugeWrapper classes for DropWizard reporters

> 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: Chesnay Schepler
>            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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