Hi everyone,

I recently attempted to create a Flink cluster on YARN by executing the 
following:
~/flink-1.5.4/bin/yarn-session.sh -n 5 -tm 2048 -s 4 -d -nm flink_yarn

The resulting command was not completely successful but it did end up creating 
a Apache Flink Dashboard with 1 Task Manager, 1 Task Slot, and 1 Job Manager. 

When I look at my Yarn Resource Manager, I don't see my application running. 
CLI calls for the application id also returned nothing.

I would like to kill the existing web dashboard as well as the other lingering 
task manager/job manager so that I can try recreating the yarn session 
successfully. 

Has anyone encountered this before and has any suggestion? I looked through 
documentation [1] which says to stop a yarn session, you will want to use the 
YARN utilities (yarn application -kill <appId>) to stop the YARN session. 
However, the application id in my logs is not found in the Resource Manager so 
it seems to already have been killed (due to the original yarn session command 
not properly executing?). 




[1] 
https://ci.apache.org/projects/flink/flink-docs-release-1.5/ops/deployment/yarn_setup.html#detached-yarn-session

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