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https://issues.apache.org/jira/browse/IGNITE-15660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17423143#comment-17423143
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Konstantin Orlov commented on IGNITE-15660:
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I think this problem will be fixed by properly stopping the SQL component.
> calciteIteratorsCleanWorker threads leakage
> -------------------------------------------
>
> Key: IGNITE-15660
> URL: https://issues.apache.org/jira/browse/IGNITE-15660
> Project: Ignite
> Issue Type: Improvement
> Reporter: Mirza Aliev
> Priority: Major
> Labels: ignite-3
> Attachments: image-2021-09-30-19-10-13-257.png,
> image-2021-09-30-19-10-39-012.png
>
>
> For example, If you run
> {{ITSchemaChangeKVViewTest#testMergeChangesAddDropAdd}} many times in the
> loop, you can see, that there are a lot of unhandled
> {{calciteIteratorsCleanWorker}} threads. See images from VisualVM
> !image-2021-09-30-19-10-13-257.png!
> !image-2021-09-30-19-10-39-012.png!
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