ASF GitHub Bot commented on FLINK-4396:

GitHub user zentol opened a pull request:


    [docs} [metrics] Update metrics documentation

    This PR makes several changes to the metrics documentation.
    Changes include
    * clearly document that reporter jars must be placed in the /lib folder, 
and document the /opt folder containing jars for flink reporters (FLINK-4396)
    * document that multiple reporters exist
    * extend the JMX documentation regarding domain and key-property list 
    * document metrics visualiuation in web-frontend
    * rework the system metrics section to be more readable, and add missing 
metrics (FLINK-5446)
    Here's a before/after of the system-metrics section:

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/zentol/flink docs_metrics

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #3116
commit 9437a073f988eda789cb992d05bfe83520ce72d7
Author: zentol <ches...@apache.org>
Date:   2017-01-11T14:09:26Z

    [FLINK-4396] [docs] Document /opt reporter jars

commit 395693c50a09a2575d9325e3fd99ca625856c4b6
Author: zentol <ches...@apache.org>
Date:   2017-01-13T11:16:29Z

    [docs] Document reporter plurality

commit f0a6abf30555d8c60cec3324f0f93c8d966df508
Author: zentol <ches...@apache.org>
Date:   2017-01-13T11:17:20Z

    [FLINK-5451] Extend JMX reporter section

commit 03ac8f602af8bcb30a59b29a3a7255e65e2bcd31
Author: zentol <ches...@apache.org>
Date:   2017-01-13T11:18:01Z

    [docs] Document metrics visualization in web-frontend

commit ca9c3bad269d3b1764ff5ef4686065fce5b14898
Author: zentol <ches...@apache.org>
Date:   2017-01-13T11:18:34Z

    [FLINK-5446] [docs] Rework system-metrics section


> GraphiteReporter class not found at startup of jobmanager
> ---------------------------------------------------------
>                 Key: FLINK-4396
>                 URL: https://issues.apache.org/jira/browse/FLINK-4396
>             Project: Flink
>          Issue Type: Improvement
>          Components: Build System, Metrics
>    Affects Versions: 1.1.1
>         Environment: Windows and Unix
>            Reporter: RWenden
>            Assignee: Chesnay Schepler
>   Original Estimate: 4h
>  Remaining Estimate: 4h
> For Flink 1.1.1 we configured Graphite metrics settings on the 
> flink-conf.yaml (for job manager (and taskmanager)).
> We see the following error in the log:
> 2016-08-15 14:20:34,167 ERROR org.apache.flink.runtime.metrics.MetricRegistry 
>               - Could not instantiate metrics reportermy_reporter. Metrics 
> might not be exposed/reported.
> java.lang.ClassNotFoundException: 
> org.apache.flink.metrics.graphite.GraphiteReporter
>                 at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
>                 at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>                 at 
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
>                 at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>                 at java.lang.Class.forName0(Native Method)
>                 at java.lang.Class.forName(Class.java:264)
>                 at 
> org.apache.flink.runtime.metrics.MetricRegistry.<init>(MetricRegistry.java:119)
> We found out that this class is not packaged inside flink-dist_2.11-1.1.1.jar.
> Long story short: we had to install/provide the following jars into the lib 
> folder to make Graphite metrics to work:
> flink-metrics-graphite-1.1.1.jar
> flink-metrics-dropwizard-1.1.1.jar
> metrics-graphite-3.1.0.jar (from dropwizard)
> We think these libraries (and the ones for Ganglia,StatsD,...) should be 
> included in flink-dist_2.11-1.1.1.jar, for these are needed at manager 
> startup time.

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