I was also able to attach the JMX (jconsole/VisualVM) console to any container (task manager) or job manager with these options in your flink-conf.yaml:
env.java.opts: -Djava.rmi.server.hostname=localhost -Dcom.sun.management.jmxremote=true -Dcom.sun.management.jmxremote.port=50001 -Dcom.sun.management.jmxremote.rmi.port=50001 -Dcom.sun.management.jmxremote.ssl=false  -Dcom.sun.management.jmxremote.authenticate=false

That way it shows me how the memory is being allocated and collected. Hope that helps:

Inline image 1

On Thu, Feb 8, 2018 at 1:55 PM, Wang, Chao <chaowang@wustl.edu> wrote:

Thanks. I’ve been plugging C/C++ libraries (e.g., libgcrypt) in my Java CEPs. And I’m interested in measuring the memory overhead of JNI. Though I’m not familiar with how Flink and the underlying JVM manage memory..




From: kedar mhaswade <kedar.mhaswade@gmail.com>
Date: Thursday, February 8, 2018 at 3:22 PM
To: "Wang, Chao" <chaowang@wustl.edu>
Cc: "user@flink.apache.org" <user@flink.apache.org>
Subject: Re: Measure the memory consumption of a job at runtime


There appears to be some  some support on the Task Manager tab of the Flink dashboard. The one capability that is missing is to take the thread dump (ala Spark UI). 

(Is there an issue/feature request for this?)


Inline image 2


Is that what you are looking for?



On Thu, Feb 8, 2018 at 12:33 PM, Wang, Chao <chaowang@wustl.edu> wrote:



I would like to measure the memory consumption of a job at runtime. I came across some discussion (here: https://stackoverflow.com/questions/35315522/flink-memory-usage ), and it seems that it’s not possible two years ago. Is it possible in the current status, and if yes, how to do it?


Thank you,