[jira] [Commented] (FLINK-6434) There may be allocatedSlots leak in SlotPool

["Till Rohrmann (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-6434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15996823#comment-15996823 ] 

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failover, but the pending request are still in SlotPool, if then a new slot register to SlotPool, it may be fulfill the outdated pending request and be added to allocatedSlots, but it will never be used and will never be recycled.



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