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From "Caldarale, Charles R" <Chuck.Caldar...@unisys.com>
Subject RE: 7.0.54 Memory Errors
Date Tue, 02 Jun 2015 14:56:20 GMT
> From: Lunsford, David [mailto:David.Lunsford@Vistronix.com] 
> Subject: 7.0.54 Memory Errors

> I am noticing in my tomcat logs Atlassian Crowd throws errors relating to memory. Does

> anyone have any ideas of what's causing?

> SEVERE: The web application [/crowd] created a Threadlocal with a key of type
> [net.sf.ehcache.util.concurrent.Striped64.ThreadHasCode]
> {calue [net.sf.ehcache.util.concurrent.Striped64$ThreadHashCode@23ff18ae]) and a 
> value of type (net.sf.ehcache.util.concurrent.Striped64.Hashcode] but failed to 
> remove it when the web application was stopped. Threads are going to be renewed 
> over time and try to avoid a probable memory leak

Read the wiki:
http://wiki.apache.org/tomcat/MemoryLeakProtection

The application logic should normally remove instances of ThreadLocal immediately after a
request has been processed since Tomcat threads are part of a pool.

 - Chuck


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