Details
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Bug
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Resolution: Done
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Critical
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7.0.0, 7.0.0.GA
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None
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Release Notes
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ER3
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CR1
Description
I was cloning repositories, creating and deleting teams and suddenly Workbench UI stopped responding. I found out there is a number of threads in the BLOCKED state on the server.
After cleaning up I wasn't able to get the UI completely stuck but in 100% of times there are 6 blocked threads and a deadlock reported by jps
Found one Java-level deadlock: ============================= "ForkJoinPool.commonPool-worker-7": waiting to lock monitor 0x00007f2bac09b6a8 (object 0x00000000c2ba92a8, a org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader), which is held by "Thread-192" "Thread-192": waiting to lock monitor 0x00007f2bcc007828 (object 0x00000000c233c028, a org.drools.core.common.ProjectClassLoader), which is held by "ForkJoinPool.commonPool-worker-7" Java stack information for the threads listed above: =================================================== "ForkJoinPool.commonPool-worker-7": at java.lang.ClassLoader.loadClass(ClassLoader.java:404) - waiting to lock <0x00000000c2ba92a8> (a org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader) at org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader.loadType(ProjectClassLoader.java:428) at org.drools.core.common.ProjectClassLoader.loadType(ProjectClassLoader.java:172) at org.drools.core.common.ProjectClassLoader.loadClass(ProjectClassLoader.java:143) - locked <0x00000000c233c028> (a org.drools.core.common.ProjectClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.drools.core.util.ClassUtils.safeLoadClass(ClassUtils.java:806) at org.drools.core.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:181) at org.drools.core.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:132) at org.drools.compiler.rule.builder.PatternBuilder.getObjectType(PatternBuilder.java:325) at org.drools.compiler.rule.builder.PatternBuilder.getObjectType(PatternBuilder.java:316) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:176) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:152) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:133) at org.drools.compiler.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:66) at org.drools.compiler.rule.builder.RuleBuilder.build(RuleBuilder.java:105) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addRule(KnowledgeBuilderImpl.java:1205) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.lambda$compileRulesLevel$3(KnowledgeBuilderImpl.java:1166) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl$$Lambda$347/2081214425.accept(Unknown Source) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291) at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) "Thread-192": at org.drools.core.common.ProjectClassLoader$DefaultInternalTypesClassLoader.loadClass(ProjectClassLoader.java:419) - waiting to lock <0x00000000c233c028> (a org.drools.core.common.ProjectClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at org.drools.compiler.builder.impl.TypeDeclarationCache.processModifiedProps(TypeDeclarationCache.java:243) at org.drools.compiler.builder.impl.TypeDeclarationCache.initTypeDeclaration(TypeDeclarationCache.java:155) at org.drools.compiler.builder.impl.TypeDeclarationCache.getAndRegisterTypeDeclaration(TypeDeclarationCache.java:91) at org.drools.compiler.builder.impl.TypeDeclarationBuilder.getAndRegisterTypeDeclaration(TypeDeclarationBuilder.java:69) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.getAndRegisterTypeDeclaration(KnowledgeBuilderImpl.java:1784) at org.drools.compiler.rule.builder.PatternBuilder.processClassObjectType(PatternBuilder.java:307) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:182) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:152) at org.drools.compiler.rule.builder.PatternBuilder.build(PatternBuilder.java:133) at org.drools.compiler.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:66) at org.drools.compiler.rule.builder.RuleBuilder.build(RuleBuilder.java:105) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addRule(KnowledgeBuilderImpl.java:1205) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.lambda$compileRulesLevel$3(KnowledgeBuilderImpl.java:1166) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl$$Lambda$347/2081214425.accept(Unknown Source) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291) at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401) at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734) at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRulesLevel(KnowledgeBuilderImpl.java:1162) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRules(KnowledgeBuilderImpl.java:1142) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileKnowledgePackages(KnowledgeBuilderImpl.java:979) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildRules(CompositeKnowledgeBuilderImpl.java:264) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:122) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105) at org.drools.compiler.kie.builder.impl.AbstractKieProject.buildKnowledgePackages(AbstractKieProject.java:232) at org.drools.compiler.kie.builder.impl.AbstractKieProject.verify(AbstractKieProject.java:74) at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieProject(KieBuilderImpl.java:251) at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:219) at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:182) at org.kie.workbench.common.services.backend.builder.core.Builder.build(Builder.java:215) - locked <0x00000000c2025c88> (a org.drools.compiler.kie.builder.impl.KieFileSystemImpl) at org.kie.workbench.common.services.backend.builder.core.BuildHelper.build(BuildHelper.java:92) at org.kie.workbench.common.services.backend.builder.core.BuildHelper$Proxy$_$$_WeldClientProxy.build(Unknown Source) at org.kie.workbench.common.services.backend.builder.ala.LocalBuildExecConfigExecutor.apply(LocalBuildExecConfigExecutor.java:64) at org.kie.workbench.common.services.backend.builder.ala.LocalBuildExecConfigExecutor.apply(LocalBuildExecConfigExecutor.java:32) at org.kie.workbench.common.services.backend.builder.ala.LocalBuildExecConfigExecutor$Proxy$_$$_WeldClientProxy.apply(Unknown Source) at org.guvnor.ala.pipeline.execution.PipelineExecutor.lambda$continuePipeline$0(PipelineExecutor.java:109) at org.guvnor.ala.pipeline.execution.PipelineExecutor$$Lambda$305/1114939966.accept(Unknown Source) at org.guvnor.ala.pipeline.StageUtil$1.execute(StageUtil.java:40) at org.guvnor.ala.pipeline.StageUtil$1.execute(StageUtil.java:35) at org.guvnor.ala.pipeline.execution.PipelineExecutor.continuePipeline(PipelineExecutor.java:94) at org.guvnor.ala.pipeline.execution.PipelineExecutor.execute(PipelineExecutor.java:76) at org.kie.workbench.common.services.backend.builder.ala.BuildPipelineInvoker.invokeLocalBuildPipeLine(BuildPipelineInvoker.java:84) at org.kie.workbench.common.services.backend.builder.ala.BuildPipelineInvoker$Proxy$_$$_WeldClientProxy.invokeLocalBuildPipeLine(Unknown Source) at org.kie.workbench.common.services.backend.builder.service.BuildServiceHelper.invokeLocalBuildPipeLine(BuildServiceHelper.java:152) at org.kie.workbench.common.services.backend.builder.service.BuildServiceHelper.localBuild(BuildServiceHelper.java:83) at org.kie.workbench.common.services.backend.builder.service.BuildServiceHelper$Proxy$_$$_WeldClientProxy.localBuild(Unknown Source) at org.kie.workbench.common.services.backend.builder.service.BuildServiceImpl.build(BuildServiceImpl.java:67) at org.kie.workbench.common.services.backend.builder.service.BuildServiceImpl$Proxy$_$$_WeldClientProxy.build(Unknown Source) at org.kie.workbench.common.services.backend.builder.service.BuildInfoService.getBuildInfo(BuildInfoService.java:60) at org.kie.workbench.common.services.backend.builder.service.BuildInfoService$Proxy$_$$_WeldClientProxy.getBuildInfo(Unknown Source) at org.kie.workbench.common.services.backend.project.ProjectClassLoaderHelper.getProjectClassLoader(ProjectClassLoaderHelper.java:44) at org.kie.workbench.common.services.backend.project.ProjectClassLoaderHelper$Proxy$_$$_WeldClientProxy.getProjectClassLoader(Unknown Source) at org.kie.workbench.common.screens.datamodeller.backend.server.indexing.JavaFileIndexer.getProjectClassLoader(JavaFileIndexer.java:145) at org.kie.workbench.common.screens.datamodeller.backend.server.indexing.JavaFileIndexer.fillIndexBuilder(JavaFileIndexer.java:129) at org.kie.workbench.common.services.refactoring.backend.server.indexing.AbstractFileIndexer.toKObject(AbstractFileIndexer.java:78) at org.kie.workbench.common.screens.datamodeller.backend.server.indexing.JavaFileIndexer$Proxy$_$$_WeldClientProxy.toKObject(Unknown Source) at org.uberfire.ext.metadata.io.BatchIndex$3.visitFile(BatchIndex.java:178) at org.uberfire.ext.metadata.io.BatchIndex$3.visitFile(BatchIndex.java:144) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:70) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:95) at org.uberfire.java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:47) at org.uberfire.java.nio.file.Files.walkFileTree(Files.java:1030) at org.uberfire.java.nio.file.Files.walkFileTree(Files.java:1051) at org.uberfire.ext.metadata.io.BatchIndex.run(BatchIndex.java:142) at org.uberfire.ext.metadata.io.BatchIndex.run(BatchIndex.java:127) at org.uberfire.ext.metadata.io.BatchIndex$1.run(BatchIndex.java:98) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Found 1 deadlock.
