[JBoss JIRA] (WFCORE-5113) Formatters defined on handlers via the formatter pattern attribute are not properly removed
by James Perkins (Jira)
James Perkins created WFCORE-5113:
-------------------------------------
Summary: Formatters defined on handlers via the formatter pattern attribute are not properly removed
Key: WFCORE-5113
URL: https://issues.redhat.com/browse/WFCORE-5113
Project: WildFly Core
Issue Type: Bug
Components: Logging
Reporter: James Perkins
Assignee: James Perkins
Most handlers on the logging subsystem have a legacy {{formatter}} attribute which accepts a pattern. When a {{named-formatter}} is not defined this value is used and a {{PatternFormatter}} is created for it's usage. However when the handler is removed the wrong name is checked against the formatter to be removed. This formatter is not used so it doesn't really create any issues, however it should be removed as it's not used.
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[JBoss JIRA] (DROOLS-5615) Deadlock in ProjectClassLoader
by Mario Fusco (Jira)
[ https://issues.redhat.com/browse/DROOLS-5615?page=com.atlassian.jira.plug... ]
Mario Fusco resolved DROOLS-5615.
---------------------------------
Resolution: Duplicate Issue
This issue has been fixed since Drools 7.8.0.Final with this commit [https://github.com/kiegroup/drools/commit/6b7840d98b0175b8efc83acf1e7b8cb...]
Please upgrade to a newer version of Drools. More in general take count that Drools 6.x is no longer supported.
> Deadlock in ProjectClassLoader
> ------------------------------
>
> Key: DROOLS-5615
> URL: https://issues.redhat.com/browse/DROOLS-5615
> Project: Drools
> Issue Type: Bug
> Components: core engine
> Affects Versions: 6.5.0.Final
> Reporter: Michael Osganian
> Assignee: Mario Fusco
> Priority: Major
>
> Hi I am using 6.5.0.Final of drools and I have a deadlock situation that is hard to reproduce. We are running about 4 threads each running its own rule engine with the same set of rules but different data. Below is the deadlock on 3 of the threads and looks like the ProjectClassLoader is at the root of the problem:
>
> Found one Java-level deadlock:Found one Java-level deadlock:============================="InferenceThread-4": waiting to lock monitor 0x00007fd5cc044a38 (object 0x0000000081b0ee18, a org.drools.core.rule.JavaDialectRuntimeData$PackageClassLoader), which is held by "InferenceThread-2""InferenceThread-2": waiting to lock monitor 0x00007fd5cc044ae8 (object 0x0000000081a2a4a8, a org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader), which is held by "InferenceThread-1""InferenceThread-1": waiting to lock monitor 0x00007fd5bc01fd28 (object 0x0000000081acc610, a org.drools.core.common.ProjectClassLoader), which is held by "InferenceThread-2"
> Java stack information for the threads listed above:==================================================="InferenceThread-4": at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.mvel2.util.ParseTools.forNameWithInner(ParseTools.java:2187) at org.mvel2.ParserConfiguration.checkForDynamicImport(ParserConfiguration.java:169) at org.mvel2.ParserConfiguration.hasImport(ParserConfiguration.java:197) at org.mvel2.ParserContext.hasImport(ParserContext.java:373) at org.mvel2.compiler.AbstractParser.createPropertyToken(AbstractParser.java:1399) at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:903) at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:111) at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:52) at org.mvel2.MVEL.compileExpression(MVEL.java:810) at org.drools.core.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:451) at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:273) at org.drools.core.rule.constraint.MvelConstraint.createMvelConditionEvaluator(MvelConstraint.java:269) at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:249) at org.drools.core.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:227) at org.drools.core.common.TripleBetaConstraints.isAllowedCachedLeft(TripleBetaConstraints.java:118) at org.drools.core.phreak.PhreakJoinNode.doLeftInserts(PhreakJoinNode.java:113) at org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:76) at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:519) at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:505) at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:341) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1359) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1350) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1331) at ActivityInferenceSession.fireRules(ActivityInferenceSession.java:261) at InferenceRunnable.doTryInference(InferenceRunnable.java:226) at InferenceRunnable.doInference(InferenceRunnable.java:129) at InferenceRunnable.run(InferenceRunnable.java:100) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)"InferenceThread-2": at java.lang.ClassLoader.loadClass(ClassLoader.java:404) - waiting to lock <0x0000000081a2a4a8> (a org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader) at org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader.loadType(ProjectClassLoader.java:394) at org.drools.core.common.ProjectClassLoader.loadType(ProjectClassLoader.java:172) at org.drools.core.common.ProjectClassLoader.loadClass(ProjectClassLoader.java:143) - locked <0x0000000081acc610> (a org.drools.core.common.ProjectClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.drools.core.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:646) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.mvel2.util.ParseTools.forNameWithInner(ParseTools.java:2187) at org.mvel2.ParserConfiguration.checkForDynamicImport(ParserConfiguration.java:169) at org.mvel2.ParserConfiguration.hasImport(ParserConfiguration.java:197) at org.mvel2.ParserContext.hasImport(ParserContext.java:373) at org.mvel2.compiler.AbstractParser.createPropertyToken(AbstractParser.java:1399) at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:903) at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:111) at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:52) at org.mvel2.MVEL.compileExpression(MVEL.java:810) at org.drools.core.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:451) at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:273) at org.drools.core.rule.constraint.MvelConstraint.createMvelConditionEvaluator(MvelConstraint.java:269) at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:249) at org.drools.core.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:227) at org.drools.core.common.TripleBetaConstraints.isAllowedCachedLeft(TripleBetaConstraints.java:118) at org.drools.core.phreak.PhreakJoinNode.doLeftInserts(PhreakJoinNode.java:113) at org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:76) at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:519) at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:505) at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:341) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1359) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1350) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1331) at ActivityInferenceSession.fireRules(ActivityInferenceSession.java:261) at InferenceRunnable.doTryInference(InferenceRunnable.java:226) at InferenceRunnable.doInference(InferenceRunnable.java:129) at InferenceRunnable.run(InferenceRunnable.java:100) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)"InferenceThread-1": at org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader.loadClass(ProjectClassLoader.java:385) - waiting to lock <0x0000000081acc610> (a org.drools.core.common.ProjectClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at com.sun.beans.finder.ClassFinder.findClass(ClassFinder.java:103) at java.beans.Introspector.findCustomizerClass(Introspector.java:1301) at java.beans.Introspector.getTargetBeanDescriptor(Introspector.java:1295) at java.beans.Introspector.getBeanInfo(Introspector.java:425) at java.beans.Introspector.getBeanInfo(Introspector.java:173) at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptors(PropertyUtilsBean.java:980) at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptors(PropertyUtilsBean.java:1084) at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:912) at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1319) at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:770) at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:846) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1120) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1003) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:396) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:163) at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159) at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115) at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:117) at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:38) at org.mvel2.ast.Substatement.getReducedValueAccelerated(Substatement.java:44) at org.mvel2.ast.Or.getReducedValueAccelerated(Or.java:34) at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:38) at org.mvel2.ast.Substatement.getReducedValueAccelerated(Substatement.java:44) at org.mvel2.ast.And.getReducedValueAccelerated(And.java:34) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85) at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:113) at org.mvel2.MVEL.executeExpression(MVEL.java:929) at org.drools.core.base.mvel.MVELEvalExpression.evaluate(MVELEvalExpression.java:104) at org.drools.core.rule.EvalCondition.isAllowed(EvalCondition.java:118) at org.drools.core.phreak.PhreakEvalNode.doLeftInserts(PhreakEvalNode.java:72) at org.drools.core.phreak.PhreakEvalNode.doNode(PhreakEvalNode.java:56) at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:349) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1359) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1350) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1331) at ActivityInferenceSession.fireRules(ActivityInferenceSession.java:261) at InferenceRunnable.doTryInference(InferenceRunnable.java:226) at InferenceRunnable.doInference(InferenceRunnable.java:129) at InferenceRunnable.run(InferenceRunnable.java:100) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
> Found 1 deadlock.
>
> I know there has been other issues entered on deadlock with ProjectClassLoader and they have either been fixed in an earlier version or closed as not reproducible. Its hard to reproduce this as it has only happened in production a few times. In some of the rules we are running we are using PropertyUtilsBean as you can see in one of the deadlock threads so not sure if that is a cause for concern here or not but in our situation each thread has its own PropertyUtilsBean instance.
>
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[JBoss JIRA] (DROOLS-5615) Deadlock in ProjectClassLoader
by Mario Fusco (Jira)
[ https://issues.redhat.com/browse/DROOLS-5615?page=com.atlassian.jira.plug... ]
Mario Fusco updated DROOLS-5615:
--------------------------------
Sprint: 2020 Week 34-36 (from Aug 17)
> Deadlock in ProjectClassLoader
> ------------------------------
>
> Key: DROOLS-5615
> URL: https://issues.redhat.com/browse/DROOLS-5615
> Project: Drools
> Issue Type: Bug
> Components: core engine
> Affects Versions: 6.5.0.Final
> Reporter: Michael Osganian
> Assignee: Mario Fusco
> Priority: Major
>
> Hi I am using 6.5.0.Final of drools and I have a deadlock situation that is hard to reproduce. We are running about 4 threads each running its own rule engine with the same set of rules but different data. Below is the deadlock on 3 of the threads and looks like the ProjectClassLoader is at the root of the problem:
>
> Found one Java-level deadlock:Found one Java-level deadlock:============================="InferenceThread-4": waiting to lock monitor 0x00007fd5cc044a38 (object 0x0000000081b0ee18, a org.drools.core.rule.JavaDialectRuntimeData$PackageClassLoader), which is held by "InferenceThread-2""InferenceThread-2": waiting to lock monitor 0x00007fd5cc044ae8 (object 0x0000000081a2a4a8, a org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader), which is held by "InferenceThread-1""InferenceThread-1": waiting to lock monitor 0x00007fd5bc01fd28 (object 0x0000000081acc610, a org.drools.core.common.ProjectClassLoader), which is held by "InferenceThread-2"
> Java stack information for the threads listed above:==================================================="InferenceThread-4": at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.mvel2.util.ParseTools.forNameWithInner(ParseTools.java:2187) at org.mvel2.ParserConfiguration.checkForDynamicImport(ParserConfiguration.java:169) at org.mvel2.ParserConfiguration.hasImport(ParserConfiguration.java:197) at org.mvel2.ParserContext.hasImport(ParserContext.java:373) at org.mvel2.compiler.AbstractParser.createPropertyToken(AbstractParser.java:1399) at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:903) at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:111) at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:52) at org.mvel2.MVEL.compileExpression(MVEL.java:810) at org.drools.core.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:451) at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:273) at org.drools.core.rule.constraint.MvelConstraint.createMvelConditionEvaluator(MvelConstraint.java:269) at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:249) at org.drools.core.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:227) at org.drools.core.common.TripleBetaConstraints.isAllowedCachedLeft(TripleBetaConstraints.java:118) at org.drools.core.phreak.PhreakJoinNode.doLeftInserts(PhreakJoinNode.java:113) at org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:76) at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:519) at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:505) at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:341) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1359) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1350) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1331) at ActivityInferenceSession.fireRules(ActivityInferenceSession.java:261) at InferenceRunnable.doTryInference(InferenceRunnable.java:226) at InferenceRunnable.doInference(InferenceRunnable.java:129) at InferenceRunnable.run(InferenceRunnable.java:100) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)"InferenceThread-2": at java.lang.ClassLoader.loadClass(ClassLoader.java:404) - waiting to lock <0x0000000081a2a4a8> (a org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader) at org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader.loadType(ProjectClassLoader.java:394) at org.drools.core.common.ProjectClassLoader.loadType(ProjectClassLoader.java:172) at org.drools.core.common.ProjectClassLoader.loadClass(ProjectClassLoader.java:143) - locked <0x0000000081acc610> (a org.drools.core.common.ProjectClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.drools.core.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:646) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.mvel2.util.ParseTools.forNameWithInner(ParseTools.java:2187) at org.mvel2.ParserConfiguration.checkForDynamicImport(ParserConfiguration.java:169) at org.mvel2.ParserConfiguration.hasImport(ParserConfiguration.java:197) at org.mvel2.ParserContext.hasImport(ParserContext.java:373) at org.mvel2.compiler.AbstractParser.createPropertyToken(AbstractParser.java:1399) at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:903) at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:111) at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:52) at org.mvel2.MVEL.compileExpression(MVEL.java:810) at org.drools.core.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:451) at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:273) at org.drools.core.rule.constraint.MvelConstraint.createMvelConditionEvaluator(MvelConstraint.java:269) at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:249) at org.drools.core.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:227) at org.drools.core.common.TripleBetaConstraints.isAllowedCachedLeft(TripleBetaConstraints.java:118) at org.drools.core.phreak.PhreakJoinNode.doLeftInserts(PhreakJoinNode.java:113) at org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:76) at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:519) at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:505) at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:341) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1359) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1350) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1331) at ActivityInferenceSession.fireRules(ActivityInferenceSession.java:261) at InferenceRunnable.doTryInference(InferenceRunnable.java:226) at InferenceRunnable.doInference(InferenceRunnable.java:129) at InferenceRunnable.run(InferenceRunnable.java:100) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)"InferenceThread-1": at org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader.loadClass(ProjectClassLoader.java:385) - waiting to lock <0x0000000081acc610> (a org.drools.core.common.ProjectClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at com.sun.beans.finder.ClassFinder.findClass(ClassFinder.java:103) at java.beans.Introspector.findCustomizerClass(Introspector.java:1301) at java.beans.Introspector.getTargetBeanDescriptor(Introspector.java:1295) at java.beans.Introspector.getBeanInfo(Introspector.java:425) at java.beans.Introspector.getBeanInfo(Introspector.java:173) at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptors(PropertyUtilsBean.java:980) at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptors(PropertyUtilsBean.java:1084) at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:912) at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1319) at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:770) at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:846) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1120) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1003) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:396) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:163) at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159) at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115) at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:117) at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:38) at org.mvel2.ast.Substatement.getReducedValueAccelerated(Substatement.java:44) at org.mvel2.ast.Or.getReducedValueAccelerated(Or.java:34) at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:38) at org.mvel2.ast.Substatement.getReducedValueAccelerated(Substatement.java:44) at org.mvel2.ast.And.getReducedValueAccelerated(And.java:34) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85) at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:113) at org.mvel2.MVEL.executeExpression(MVEL.java:929) at org.drools.core.base.mvel.MVELEvalExpression.evaluate(MVELEvalExpression.java:104) at org.drools.core.rule.EvalCondition.isAllowed(EvalCondition.java:118) at org.drools.core.phreak.PhreakEvalNode.doLeftInserts(PhreakEvalNode.java:72) at org.drools.core.phreak.PhreakEvalNode.doNode(PhreakEvalNode.java:56) at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:349) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1359) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1350) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1331) at ActivityInferenceSession.fireRules(ActivityInferenceSession.java:261) at InferenceRunnable.doTryInference(InferenceRunnable.java:226) at InferenceRunnable.doInference(InferenceRunnable.java:129) at InferenceRunnable.run(InferenceRunnable.java:100) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
> Found 1 deadlock.
>
> I know there has been other issues entered on deadlock with ProjectClassLoader and they have either been fixed in an earlier version or closed as not reproducible. Its hard to reproduce this as it has only happened in production a few times. In some of the rules we are running we are using PropertyUtilsBean as you can see in one of the deadlock threads so not sure if that is a cause for concern here or not but in our situation each thread has its own PropertyUtilsBean instance.
>
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[JBoss JIRA] (DROOLS-5603) Refactor super invocation setting
by Gabriele Cardosi (Jira)
[ https://issues.redhat.com/browse/DROOLS-5603?page=com.atlassian.jira.plug... ]
Gabriele Cardosi closed DROOLS-5603.
------------------------------------
> Refactor super invocation setting
> ---------------------------------
>
> Key: DROOLS-5603
> URL: https://issues.redhat.com/browse/DROOLS-5603
> Project: Drools
> Issue Type: Task
> Reporter: Gabriele Cardosi
> Assignee: Gabriele Cardosi
> Priority: Major
> Labels: TrustyAI
>
> Currently in sources generation the super invocation is managed by field index
> {code:java}
> // Some comments here
> ExplicitConstructorInvocationStmt superStatement = (ExplicitConstructorInvocationStmt) statement;
> NameExpr algorithmNameExpr = (NameExpr) superStatement.getArgument(2);
> algorithmNameExpr.setName(String.format("\"%s\"", treeModel.getAlgorithmName()));
> {code}
> This must be changed so that field to be set is looked for by name and - if not found, an exception must be thrown (as for the AssignExpr)
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[JBoss JIRA] (DROOLS-5607) DRLDumper corrupts accumulate over conjunction of patterns
by Mario Fusco (Jira)
[ https://issues.redhat.com/browse/DROOLS-5607?page=com.atlassian.jira.plug... ]
Mario Fusco resolved DROOLS-5607.
---------------------------------
Resolution: Done
Fixed by https://github.com/kiegroup/drools/commit/89db4bc94119821c4c934e175201c7f...
> DRLDumper corrupts accumulate over conjunction of patterns
> ----------------------------------------------------------
>
> Key: DROOLS-5607
> URL: https://issues.redhat.com/browse/DROOLS-5607
> Project: Drools
> Issue Type: Bug
> Components: core engine
> Affects Versions: 7.42.0.Final
> Reporter: Matteo Casalino
> Assignee: Mario Fusco
> Priority: Major
> Attachments: parser-dumper-with-accumulate-on-and.zip
>
>
> The following valid accumulate clause:
> {noformat}
> Set(size>=1) from accumulate(
> $p1:Pattern1(...)
> and
> $p2:Pattern2(...)
> , collectSet($p1)
> ){noformat}
> is modified as follows when parsed and re-serialized with DRLParser/DRLDumper:
> {noformat}
> Set(size>=1) from accumulate(
> ($p1:Pattern1(...)
> and
> $p2:Pattern2(...))
> , collectSet($p1)
> ){noformat}
> The latter syntax is rejected by the Drools compiler with the following error:
> {noformat}
> Error Messages:
> Message [id=1, kieBase=defaultKieBase, level=ERROR, path=org/example/rules.drl, line=14, column=0
> text=Invalid accumulate pattern in rule 'round trips accumulate'.]{noformat}
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