[jbosstools-issues] [JBoss JIRA] (JBIDE-15321) ConcurrentModificationException in KbBuilder

ConcurrentModificationException in KbBuilder -------------------------------------------- Key: JBIDE-15321 URL: https://issues.jboss.org/browse/JBIDE-15321 Project: Tools (JBoss Tools) Issue Type: Bug Components: CDI Affects Versions: 4.1.0.Final Environment: eclipse.buildId=4.3.0.I20130605-2000 java.version=1.7.0_21 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -product org.eclipse.epp.package.jee.product Command-line arguments: -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.jee.product Reporter: George Gastaldi The following exception happens sporadically when Eclipse is building projects in background (each panel is a log entry in the Error log panel): {code} Errors running builder 'JBoss Knowledge Base Builder' on project 'ui-tests'. java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894) at java.util.HashMap$KeyIterator.next(HashMap.java:928) at java.util.AbstractCollection.addAll(AbstractCollection.java:333) at org.jboss.tools.jst.web.kb.internal.scanner.ClassPathMonitor.hasToUpdateProjectDependencies(ClassPathMonitor.java:173) at org.jboss.tools.jst.web.kb.internal.scanner.ClassPathMonitor.build(ClassPathMonitor.java:214) at org.jboss.tools.jst.web.kb.internal.KbBuilder.build(KbBuilder.java:102) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:726) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) {code} and: {code} Errors running builder 'JBoss Knowledge Base Builder' on project 'maven'. java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894) at java.util.HashMap$KeyIterator.next(HashMap.java:928) at java.util.AbstractCollection.addAll(AbstractCollection.java:333) at org.jboss.tools.jst.web.kb.internal.scanner.ClassPathMonitor.hasToUpdateProjectDependencies(ClassPathMonitor.java:173) at org.jboss.tools.jst.web.kb.internal.scanner.ClassPathMonitor.build(ClassPathMonitor.java:214) at org.jboss.tools.jst.web.kb.internal.KbBuilder.build(KbBuilder.java:102) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:726) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) {code} {code} Problems occurred when invoking code from plug-in: "org.eclipse.core.resources". java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894) at java.util.HashMap$KeyIterator.next(HashMap.java:928) at java.util.AbstractCollection.addAll(AbstractCollection.java:333) at org.jboss.tools.jst.web.kb.internal.scanner.ClassPathMonitor.hasToUpdateProjectDependencies(ClassPathMonitor.java:173) at org.jboss.tools.jst.web.kb.internal.scanner.ClassPathMonitor.build(ClassPathMonitor.java:214) at org.jboss.tools.jst.web.kb.internal.KbBuilder.build(KbBuilder.java:102) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:726) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) {code}