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
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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