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https://issues.apache.org/jira/browse/FLINK-15224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17236104#comment-17236104
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Matthias commented on FLINK-15224:
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[~trohrmann] [~zhuzh] Given that this bug report "survived" already two
releases: Is it still an issue? Should we change the priority to Minor? Or
should raise this to be solved in 1.12 or 1.12.1?
> Resource requirements are not respected when fulfilling a slot request with
> unresolvedRootSlots from a SlotSharingManager
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-15224
> URL: https://issues.apache.org/jira/browse/FLINK-15224
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.11.0
> Reporter: Zhu Zhu
> Priority: Major
>
> In {{SchedulerImpl#allocateMultiTaskSlot}}, if a slot request cannot be
> fulfilled immediately with a resolved root slot(MultiTaskSlot that is
> fulfilled by an allocated slot) or with available slots, it will be assigned
> to a random unresolved root slot. It does not do resource requirements check
> in this case, so a large task slot can be assigned to a small shared slot
> (unresolved root slot) and when the shared slot received its physical slot
> offer, it will be recognized as oversubscribing and the slot would be
> released and related tasks would fail.
> It's not a problem for now since specified resources are not used yet, but
> can be a problem in the future when we are to support specified resources.
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