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https://issues.apache.org/jira/browse/FLINK-9047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann closed FLINK-9047.
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Resolution: Fixed
Fixed via
master: 6c70b7bd8e15684358fddc802f2eb9e62c9a16ac
1.5.0: c28828591073399ef1585f16a3a76fbf327e7be4
> SlotPool can fail to release slots
> ----------------------------------
>
> Key: FLINK-9047
> URL: https://issues.apache.org/jira/browse/FLINK-9047
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Affects Versions: 1.5.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Priority: Blocker
> Labels: flip-6
> Fix For: 1.5.0
>
>
> The {{SlotPool}} releases idling slots. If the release operation fails (e.g.
> timeout), then it simply continues using the slot. This is problematic if the
> owning {{TaskExecutor}} failed before and was unregistered in the meantime
> from the {{SlotPool}}. As a result, the {{SlotPool}} will reuse the slot and
> whenever it tries to return because it is idling it will fail again. This,
> effectively, renders the scheduling of a job impossible.
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