[jboss-jira] [JBoss JIRA] (DROOLS-890) Thread deadlock issue in class ProjectClassLoader.java

[Thomas Leung (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13105423#comment-13105423 ] 

Thomas Leung commented on DROOLS-890:
-------------------------------------

Also, another hint is that we observed it always happened in one of our drl rule which it eval an local function and then this function call another local function.

e.g. In test.drl :
rule "A"
when eval(function1(...))
then .....
end

function boolean function1(...) {
    return function2(...);
}

function boolean function2(...) {
    return true;
}

I reviewed the generated java from this drl and seems like Drools will compile all functions to individual classes and the rule class  import static the function1 class and then function1 class will import static the function2 class. Just wonder if this will cause the ClassNotFoundException or not ? Our functions are not likely causing ClassNotFoundException as it just does some string manipulations.


> Thread deadlock issue in class ProjectClassLoader.java 
> -------------------------------------------------------
>
>                 Key: DROOLS-890
>                 URL: https://issues.jboss.org/browse/DROOLS-890
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.1.0.Final
>            Reporter: Vivek Hingorani
>            Assignee: Mario Fusco
>             Fix For: 6.3.0.Final
>
>
> In our project , we are using drools6.1.0.Final jars and the rules are deployed in a jar. Another application when trying to use the rules jar is getting thread deadlock problem. Stack trace is 
> at org.drools.core.common.ProjectClassLoader$InternalTypesClassLoader.loadClass(ProjectClassLoader,java284)
> Two threads are in deadlock condition on this thread. I restarted the application and the error is gone but we need to fix this issue so that it is not reproduced later.The class is in drools-core jar



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