GitHub user zentol opened a pull request:

    https://github.com/apache/flink/pull/3116

    [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 
(FLINK-5451)
    * 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:
    Before:
    
![before](https://cloud.githubusercontent.com/assets/5725237/21928711/9f47ef08-d98c-11e6-8f22-9029f4f4c10f.png)
    
    After:
    
![after](https://cloud.githubusercontent.com/assets/5725237/21928715/a318b2ac-d98c-11e6-8d54-792b80a351c7.png)

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:

    https://github.com/apache/flink/pull/3116.patch

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

----


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