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https://issues.apache.org/jira/browse/FLINK-6434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15996823#comment-15996823
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Till Rohrmann commented on FLINK-6434:
--------------------------------------
Thanks for reporting the issue. I think the best way to solve the problem is to
check whether we can complete the pending request future. If this is not the
case, then we should release the {{SimpleSlot}} and add the {{AllocatedSlot}}
to the set of {{availableSlots}} instead of moving it to {{allocatedSlots}}.
> There may be allocatedSlots leak in SlotPool
> --------------------------------------------
>
> Key: FLINK-6434
> URL: https://issues.apache.org/jira/browse/FLINK-6434
> Project: Flink
> Issue Type: Bug
> Components: Cluster Management
> Reporter: shuai.xu
> Assignee: shuai.xu
> Labels: flip-6
>
> If the call allocateSlot() from Execution to Slotpool timeout, the job will
> begin to failover, but the pending request are still in SlotPool, if then a
> new slot register to SlotPool, it may be fulfill the outdated pending request
> and be added to allocatedSlots, but it will never be used and will never be
> recycled.
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