[rules-users] PermGen OOM and shadow proxies

[Mark Proctor]

s erel wrote:
> I understand that shadow facts are created once during building.
> Still, the application crashes in less than a minute when shadow facts 
> are enabled and it runs for hours when they are disabled.
>
> I was assuming it to be related to a corrupted data structure that leaks.
>
> Can you think of such a case?
> Are there any limitations for shadow facts (besides them being final)?
Can you try this with trunk and let us know if it still happens?
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/
>
>
> On 10/8/07, *Mark Proctor* < mproctor at codehaus.org 
> <mailto:mproctor at codehaus.org>> wrote:
>
>     s erel wrote:
>>     Hello,
>>
>>     I've posted before regarding this issue.
>>     We currently evaluating drools 4.01 for our project. We've
>>     noticed that the perm gen space grows at a rapid rate and that
>>     eventually results
>>     in a OOM. When shadow facts are disabled, the problem seems to go
>>     away (or at least not as noticeable as before).
>>
>>     Any ideas?
>>     What is the effect of a shadowed object which itself contains
>>     complex objects that are also involved in a pattern (through
>>     inline eval)?
>     when the system encounters a new Class, and shadow is enabled, it
>     generates a proxy to that class - however this is a one time
>     operation. The only way that shadow proxies would continue to be
>     created would be if you where continually creating or loading new
>     classes or redefinitions of the old classes.
>>
>>
>>
>>
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>
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