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Posted to issues@nifi.apache.org by "Bob Paulin (Jira)" <ji...@apache.org> on 2026/01/05 14:57:00 UTC

[jira] [Updated] (NIFI-15388) Leak in ReflectionUtils annotation cache.

     [ https://issues.apache.org/jira/browse/NIFI-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bob Paulin updated NIFI-15388:
------------------------------
    Summary: Leak in ReflectionUtils annotation cache.   (was: Leak in ReflectionUtils annotation cache.  Value should use WeakReference)

> Leak in ReflectionUtils annotation cache. 
> ------------------------------------------
>
>                 Key: NIFI-15388
>                 URL: https://issues.apache.org/jira/browse/NIFI-15388
>             Project: Apache NiFi
>          Issue Type: Bug
>            Reporter: Bob Paulin
>            Priority: Major
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> When org.apache.nifi.util.ReflectionUtils invoke methods are called annotations are cached in a WeakHashMap.  While keys (Class) in the WeakHashMap are weak references the values (Methods) are strong references.  The classes can not then be garbaged collected because the Methods have a reference to there class.  
>  
> So the values that are added to the cache should also be wrapped in a WeakReference.  Then the classes can be garbage collected.



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