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https://issues.apache.org/jira/browse/FLINK-9736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Richter closed FLINK-9736.
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Resolution: Not A Bug
> Potential null reference in KeyGroupPartitionedPriorityQueue#poll()
> -------------------------------------------------------------------
>
> Key: FLINK-9736
> URL: https://issues.apache.org/jira/browse/FLINK-9736
> Project: Flink
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: vinoyang
> Priority: Minor
>
> {code}
> final PQ headList = heapOfkeyGroupedHeaps.peek();
> final T head = headList.poll();
> {code}
> {{peek}} call may return null.
> The return value should be checked before de-referencing.
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