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https://issues.apache.org/jira/browse/JCS-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997018#comment-15997018
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Ryan Fong edited comment on JCS-177 at 5/5/17 3:51 PM:
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I have attached one possible solution that should fix this problem as
jcs-177.patch. An alternative to this is to have a pointer from CompositeCache
to CompositeCacheManager so we do not incur the overhead of incrementing and
decrementing the client count.
Also find an Eclipse project that uses stock 2.1 to demonstrate how the leak
occurs and how CompositeCacheManager.freeCache avoids this issue.
Update:
I just discovered that auxiliaryCaches is leaking as well. I have updated the
patch and test with a suggestion but did not compile it.
was (Author: rpmcfong):
I have attached one possible solution that should fix this problem as
jcs-177.patch. An alternative to this is to have a pointer from CompositeCache
to CompositeCacheManager so we do not incur the overhead of incrementing and
decrementing the client count.
Also find an Eclipse project that uses stock 2.1 to demonstrate how the leak
occurs and how CompositeCacheManager.freeCache avoids this issue.
Update:
I just discovered that auxiliaryCaches is leaking as well. I can update the
files later with an updated suggestion.
> CompositeCacheManager leaks memory if CacheAccess.dipose is called
> ------------------------------------------------------------------
>
> Key: JCS-177
> URL: https://issues.apache.org/jira/browse/JCS-177
> Project: Commons JCS
> Issue Type: Bug
> Components: Composite Cache
> Affects Versions: jcs-2.1
> Reporter: Ryan Fong
> Priority: Critical
> Attachments: jcs-177.patch, jcs-test.zip
>
>
> In JCS 2.1, The org.apache.commons.jcs.engine.control.CompositeCacheManager
> holds onto a reference of CacheAccess in its caches map. If
> CacheAccess.dispose is called, this reference is not cleaned up which results
> in a memory leak.
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