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https://issues.apache.org/jira/browse/FLINK-8372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16313085#comment-16313085
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ASF GitHub Bot commented on FLINK-8372:
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Github user sebastiansemmle commented on the issue:
https://github.com/apache/flink/pull/5245
closing in favor of #4784
> NPEs when stopping containers via YarnResourceManager and adding Tasks via
> TaskSlotTable
> ----------------------------------------------------------------------------------------
>
> Key: FLINK-8372
> URL: https://issues.apache.org/jira/browse/FLINK-8372
> Project: Flink
> Issue Type: Bug
> Components: YARN
> Reporter: Sebastian Bauersfeld
>
> [lgtm.com|https://lgtm.com] detected two cases where NullPointerExceptions
> could be triggered when stopping a worker node
> ([click|https://lgtm.com/projects/g/apache/flink/snapshot/512a3895328d29500458cd03a4c55eea031334eb/files/flink-yarn/src/main/java/org/apache/flink/yarn/YarnResourceManager.java?sort=name&dir=ASC&mode=heatmap&excluded=false#x84390b0ea77b236f:1])
> and when adding a task
> ([click|https://lgtm.com/projects/g/apache/flink/snapshot/512a3895328d29500458cd03a4c55eea031334eb/files/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/slot/TaskSlotTable.java?sort=name&dir=ASC&mode=heatmap&excluded=false#xb891777ba106b132:1]).
> I have a PR prepared to fix those, but wanted to make sure I have a ticket
> to file it against.
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