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https://issues.apache.org/jira/browse/NIFI-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18050696#comment-18050696
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ASF subversion and git services commented on NIFI-15388:
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Commit f90656f9809cb0dbfe323aa5cab7369933931765 in nifi's branch
refs/heads/main from Bob Paulin
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=f90656f980 ]
NIFI-15388 Fixed Reference Leak in ReflectionUtils annotation cache (#10691)
- WeakHashMap does not work properly to remove keys and values due to strong
reference to the Key found in the Cache Value
- Keys should be programatically invalidated when the ClassLoader is closed to
allow classes to be Garbage Collected
- Moved ReflectionUtils to nifi-nar-utils so it can be shared by
nifi-framework-nar-utils and nifi-framework-components
Signed-off-by: David Handermann <[email protected]>
> 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
> Assignee: Bob Paulin
> Priority: Major
> Time Spent: 1h
> 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.-
>
> Keys should be removed from the cache when the ClassLoader is removed.
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