[jboss-jira] [JBoss JIRA] (DROOLS-1567) Threads in BLOCKED state in ProjectClassLoader and ParseTools

[Arkady Syamtomov (JIRA)]

Arkady Syamtomov created DROOLS-1567:
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             Summary: Threads in BLOCKED state in ProjectClassLoader and ParseTools
                 Key: DROOLS-1567
                 URL: https://issues.jboss.org/browse/DROOLS-1567
             Project: Drools
          Issue Type: Bug
          Components: core engine
    Affects Versions: 6.5.0.Final
            Reporter: Arkady Syamtomov
            Assignee: Mario Fusco


Building the knowledge bases in parallel threads does not scale due to the recurrent synchronised call of Class.forName, detected in ProjectClassLoader and org.mvel2.util.ParceTools.

While in the org.drools.core.common.ProjectClassLoader the classes, if not found, are blacklisted, in the org.mvel2.util.ParceTools there is no blacklist logic implemented at all.

Nevertheless, even with org.drools.core.common.ProjectClassLoader the issue remains, since the internal DRL conditions query are submitted as class names to resolve and with the number of rules growing in the system, the blacklisting of invalid class names is not enough any more: it would be desirable to have an internal hook to filter the names matching a configurable pattern.





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