[jira] [Comment Edited] (FLINK-16789) Support JMX RMI random port assign & retrieval via JMXConnectorServer

["Chesnay Schepler (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-16789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17186024#comment-17186024 ] 

Chesnay Schepler edited comment on FLINK-16789 at 8/27/20, 6:12 PM:
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[~rongr] What about the port retrieval? Random port assignment was only one part of this ticket, no?


was (Author: zentol):
[~rongr] What about the port retrieval? Random port assignment was only one part of it, no?

> Support JMX RMI random port assign & retrieval via JMXConnectorServer
> ---------------------------------------------------------------------
>
>                 Key: FLINK-16789
>                 URL: https://issues.apache.org/jira/browse/FLINK-16789
>             Project: Flink
>          Issue Type: New Feature
>          Components: Runtime / Coordination, Runtime / Task
>    Affects Versions: 1.11.0
>            Reporter: Rong Rong
>            Assignee: Rong Rong
>            Priority: Major
>              Labels: pull-request-available
>
> Currently there are no easy way to assign jmxrmi port to a running Flink job.
> The typical tutorial is to add the following to both TM and JM launch env:
> {code:java}
> -Dcom.sun.management.jmxremote
> -Dcom.sun.management.jmxremote.port=9999
> -Dcom.sun.management.jmxremote.local.only=false
> {code}
> However, setting the jmxremote port to 9999 is not usually a viable solution when Flink job is running on a shared environment (YARN / K8s / etc).
> setting *{{-Dcom.sun.management.jmxremote.port=0}}* is the best option however, there's no easy way to retrieve such port assignment. We proposed to use JMXConnectorServerFactory to explicitly establish a JMXServer inside *{{ClusterEntrypoint}}* & *{{TaskManagerRunner}}*.
> With the JMXServer explicitly created, we can return the JMXRMI information via either REST API or WebUI.



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