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Posted to issues-all@impala.apache.org by "Bikramjeet Vig (Jira)" <ji...@apache.org> on 2022/04/05 17:56:00 UTC
[jira] [Resolved] (IMPALA-10942) Fix memory leak in admission controller
[ https://issues.apache.org/jira/browse/IMPALA-10942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bikramjeet Vig resolved IMPALA-10942.
-------------------------------------
Resolution: Fixed
> Fix memory leak in admission controller
> ---------------------------------------
>
> Key: IMPALA-10942
> URL: https://issues.apache.org/jira/browse/IMPALA-10942
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.0.0
> Reporter: Bikramjeet Vig
> Assignee: Bikramjeet Vig
> Priority: Critical
> Attachments: impala4-coordinator-memory-leak-heap-growth-profile.pdf
>
>
> [https://github.com/apache/impala/blob/1a61a8025c87c37921a1bba4c49f754d8bd10bcc/be/src/scheduling/admission-controller.cc#L1196]
> The intent of the aforementioned line in the code was to check and remove the queue_node if the query was not queued. Instead it end up checking whether that flag is a null pointer or not. Since a valid pointer is always sent, this would result in the queue node never being removed resulting in a memory leak
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