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https://issues.apache.org/jira/browse/FLINK-4156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364110#comment-15364110
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Aljoscha Krettek commented on FLINK-4156:
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This might be a show stopper for the 1.1 release. [~rmetzger], what do you
think? Not being able to run multiple Flink-Yarn jobs in one Yarn cluster seems
like a pretty big problem.
> Job with -m yarn-cluster registers TaskManagers to another running Yarn
> session
> -------------------------------------------------------------------------------
>
> Key: FLINK-4156
> URL: https://issues.apache.org/jira/browse/FLINK-4156
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Reporter: Stefan Richter
>
> When a job is started using cluster mode (-m yarn-cluster) and a Yarn session
> is running on the same cluster, the job accidentally registers it's worker
> tasks with the ongoing Yarn session. This happens because the same Zookeeper
> namespace is used.
> We should consider isolating Flink applications from another by using UUIDS,
> e.g. based on their application ids, in their Zookeeper paths.
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