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https://issues.apache.org/jira/browse/FLINK-5738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17328832#comment-17328832
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Flink Jira Bot commented on FLINK-5738:
---------------------------------------
This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Destroy created backend when task is canceled
> ---------------------------------------------
>
> Key: FLINK-5738
> URL: https://issues.apache.org/jira/browse/FLINK-5738
> Project: Flink
> Issue Type: Bug
> Components: Runtime / State Backends
> Affects Versions: 1.2.0
> Reporter: Xiaogang Shi
> Priority: Major
> Labels: stale-major
>
> When a task is canceled, the {{ClosableRegistry}} will be closed in the
> cancel thread. However, the task may still in the creation of
> {{KeyedStateBackend}}, and it will fail to register the backend to the
> {{ClosableRegistry}}. Because the backend is not assigned to the operator yet
> (due to the exception), the backend will not be destroyed when the task
> thread exits.
> A simple solution is to catch exception in the registering and destroy the
> created backend in the case of failures.
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