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Posted to issues@ignite.apache.org by "Vyacheslav Koptilin (Jira)" <ji...@apache.org> on 2021/12/20 11:41:00 UTC

[jira] [Created] (IGNITE-16161) Memory leak in BaseQueryContext

Vyacheslav Koptilin created IGNITE-16161:
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             Summary: Memory leak in BaseQueryContext
                 Key: IGNITE-16161
                 URL: https://issues.apache.org/jira/browse/IGNITE-16161
             Project: Ignite
          Issue Type: Bug
    Affects Versions: 3.0.0-alpha3
            Reporter: Vyacheslav Koptilin
         Attachments: image-2021-12-20-14-37-02-163.png

BaseQueryContext contains a number of static fields that are used in order to store references to internal classes. For example, BaseQueryContext.CLUSTER which indirectly refers to ignite tables (TableImpl instances). Unfortunately, these references are not cleared even though the corresponding ignite node is stopped.
The following trace based on a heap dump illustrates the issue:
 !image-2021-12-20-14-37-02-163.png! 

This issue can be partially mitigated by clearing ring buffers in StripedDisruptor, but the right way to fix the issue is a proper approach to handle static collections in BaseQueryContext.




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