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From "Rex Wang (JIRA)" <j...@apache.org>
Subject [jira] Closed: (GERONIMO-4868) cglib ThreadLocal causing ClassLoader memory leak
Date Thu, 04 Feb 2010 06:56:28 GMT

     [ https://issues.apache.org/jira/browse/GERONIMO-4868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rex Wang closed GERONIMO-4868.
------------------------------


> cglib ThreadLocal causing ClassLoader memory leak
> -------------------------------------------------
>
>                 Key: GERONIMO-4868
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4868
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.1.4
>            Reporter: Kevan Miller
>            Assignee: Kevan Miller
>             Fix For: 2.1.5, 2.2, 3.0
>
>
> ghostknife reported an OOME PermGen failure during a redeploy of an app. I took at the
.hprof file generated on an OOME when -XX:+HeapDumpOnOutOfMemoryError is set.
> One leak is caused by the following:
> {code}
> Class Name                                                                          
                                    | Shallow Heap | Retained Heap 
> --------------------------------------------------------------------------------------------------------------------------------------------------------
> org.apache.geronimo.kernel.config.MultiParentClassLoader @ 0xac80f258               
                                    |           96 |        13,896 
> |- parent org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader @ 0xac80f470
                               |           72 |           720 
> |  '- [1] java.lang.ClassLoader[10] @ 0xac813d18                                    
                                    |           56 |           776 
> |     '- parents org.apache.geronimo.kernel.config.MultiParentClassLoader @ 0xac812f88
                                  |           96 |         7,304 
> |        '- <classloader> class org.apache.geronimo.management.geronimo.WebModule$$EnhancerByCGLIB$$aaa027b5
@ 0xb1bd48a8|          432 |         8,784 
> |           '- proxyType org.apache.geronimo.kernel.basic.ProxyMethodInterceptor @ 0xac849258
                           |           24 |        46,904 
> |              '- [0] net.sf.cglib.proxy.Callback[1] @ 0xac846ce8                   
                                    |           16 |        46,920 
> |                 '- value java.lang.ThreadLocal$ThreadLocalMap$Entry @ 0xac844080  
                                    |           32 |        46,952 
> |                    '- [8] java.lang.ThreadLocal$ThreadLocalMap$Entry[64] @ 0xac7c80b0
                                 |          272 |       106,984 
> |                       '- table java.lang.ThreadLocal$ThreadLocalMap @ 0xac730ba8  
                                    |           24 |       107,008 
> |                          '- threadLocals java.lang.Thread @ 0xac726f80  DefaultThreadPool
1 Thread                     |           88 |       107,584 
> --------------------------------------------------------------------------------------------------------------------------------------------------------
> {code}

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