Re: [Springframework-developer] Cleanup of context resources on webapp reload

[Dmitriy K. <dko...@ru...>]

I'm just wondering, would the use of WeakHashMap in CachedIntrospectionResults help?

Dmitriy.

Tim Kettering wrote:

> 
> I posted this to the users list last week and did not receive any reply  
> on it, so I'm posting it again here on the developer list, in hopes i  
> could get an reply from someone here.   I'm trying to determine if its  
> something I should be doing myself, or if hte spring context should be  
> cleaning up those resources by itself on the .close() call.  Further  
> profiling shows that there are duplicate instances of SQLError and  
> hibernate proxy classes hanging around afterwards too.  Other objects  
> do get cleaned up properly.
> 
> --------
> Hi everyone,
> 
> We're (meaning me) looking into some resource leaks that are occuring  
> when our webapp context gets reloaded.  I found that context.close()  
> needs to be called on the destroy() method of plugin we're using, and  
> it works for a good majority of the objects we were seeing leaked, but  
> there are some objects that I'm unable to make go away. Object in  
> question is the:
> 
> org.springframework.beans.CachedIntrospectionResults
> 
> Whenever I reload the context - the profiler I'm using shows that I  
> have essentially a duplicate group of those objects (same instance  
> count) as the original, and successive reloads will continue to  
> duplicate this.
> 
> The profiler also shows the final reference to those objects like this:
> 
> 100% - 1008 bytes - 63 alloc.  
> org.springframework.context.support.ClassPathXmlApplicationContext.<init >
> 
> So basically I guess what I'm asking is for ideas or suggestions on how  
> I could get those to clean up.  This bean doesnt show up in the Spring  
> javadocs.  And looking in CVS says its a package level bean, not for  
> application use, so I'm thinking that closing the context should (in  
> theory) clean this up?   Thanks in advance.
> 
> -tim
> 
> 
> 
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