java.lang.NullPointerException

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  • When stomp client sends unsubscribe command the NullPointerException occurs in DefaultSubscriptionRegistry. Stack trace and log example: aa DEBUG org.springframework.messaging.simp.stomp.StompDecoder: Decoded [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.100]}, simpMessageType=UNSUBSCRIBE, simpSubscriptionId=/topic/name.100, id=7ead5193-cfdc-94f7-8571-6a0721ee2226, timestamp=1401467621119}] aa DEBUG org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry: Unubscribe request: [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.100]}, simpMessageType=UNSUBSCRIBE, simpSessionAttributes={}, simpSubscriptionId=/topic/name.100, simpSessionId=s2i37nxt, id=2f7bd8d9-1cfb-b635-ea67-661f078f69f7, timestamp=1401467621119}] aa DEBUG org.springframework.messaging.simp.stomp.StompDecoder: Decoded [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.*]}, simpMessageType=UNSUBSCRIBE, simpSubscriptionId=/topic/name.*, id=00039d49-3fc4-fd23-f006-6a2e4cd01dc9, timestamp=1401467621119}] aa DEBUG org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry: Unubscribe request: [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.*]}, simpMessageType=UNSUBSCRIBE, simpSessionAttributes={}, simpSubscriptionId=/topic/name.*, simpSessionId=s2i37nxt, id=9ed66ecc-4c0d-d59c-8458-4285dd630831, timestamp=1401467621119}] Exception in thread "clientInboundChannel-5" java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry$SessionSubscriptionInfo.getSubscriptions(DefaultSubscriptionRegistry.java:315) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry.removeSubscriptionInternal(DefaultSubscriptionRegistry.java:98) at org.springframework.messaging.simp.broker.AbstractSubscriptionRegistry.unregisterSubscription(AbstractSubscriptionRegistry.java:91) at org.springframework.messaging.simp.broker.SimpleBrokerMessageHandler.handleMessageInternal(SimpleBrokerMessageHandler.java:129) at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:177) at org.springframework.messaging.support.ExecutorSubscribableChannel$1.run(ExecutorSubscribableChannel.java:70) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Exception in thread "clientInboundChannel-2" java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry$SessionSubscriptionInfo.getSubscriptions(DefaultSubscriptionRegistry.java:315) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry.removeSubscriptionInternal(DefaultSubscriptionRegistry.java:98) at org.springframework.messaging.simp.broker.AbstractSubscriptionRegistry.unregisterSubscription(AbstractSubscriptionRegistry.java:91) at org.springframework.messaging.simp.broker.SimpleBrokerMessageHandler.handleMessageInternal(SimpleBrokerMessageHandler.java:129) at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:177) at org.springframework.messaging.support.ExecutorSubscribableChannel$1.run(ExecutorSubscribableChannel.java:70) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)
    via by Serhii Marchuk,
  • When stomp client sends unsubscribe command the NullPointerException occurs in DefaultSubscriptionRegistry. Stack trace and log example: aa DEBUG org.springframework.messaging.simp.stomp.StompDecoder: Decoded [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.100]}, simpMessageType=UNSUBSCRIBE, simpSubscriptionId=/topic/name.100, id=7ead5193-cfdc-94f7-8571-6a0721ee2226, timestamp=1401467621119}] aa DEBUG org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry: Unubscribe request: [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.100]}, simpMessageType=UNSUBSCRIBE, simpSessionAttributes={}, simpSubscriptionId=/topic/name.100, simpSessionId=s2i37nxt, id=2f7bd8d9-1cfb-b635-ea67-661f078f69f7, timestamp=1401467621119}] aa DEBUG org.springframework.messaging.simp.stomp.StompDecoder: Decoded [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.*]}, simpMessageType=UNSUBSCRIBE, simpSubscriptionId=/topic/name.*, id=00039d49-3fc4-fd23-f006-6a2e4cd01dc9, timestamp=1401467621119}] aa DEBUG org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry: Unubscribe request: [Payload byte[0]][Headers={stompCommand=UNSUBSCRIBE, nativeHeaders={id=[/topic/name.*]}, simpMessageType=UNSUBSCRIBE, simpSessionAttributes={}, simpSubscriptionId=/topic/name.*, simpSessionId=s2i37nxt, id=9ed66ecc-4c0d-d59c-8458-4285dd630831, timestamp=1401467621119}] Exception in thread "clientInboundChannel-5" java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry$SessionSubscriptionInfo.getSubscriptions(DefaultSubscriptionRegistry.java:315) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry.removeSubscriptionInternal(DefaultSubscriptionRegistry.java:98) at org.springframework.messaging.simp.broker.AbstractSubscriptionRegistry.unregisterSubscription(AbstractSubscriptionRegistry.java:91) at org.springframework.messaging.simp.broker.SimpleBrokerMessageHandler.handleMessageInternal(SimpleBrokerMessageHandler.java:129) at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:177) at org.springframework.messaging.support.ExecutorSubscribableChannel$1.run(ExecutorSubscribableChannel.java:70) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Exception in thread "clientInboundChannel-2" java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry$SessionSubscriptionInfo.getSubscriptions(DefaultSubscriptionRegistry.java:315) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry.removeSubscriptionInternal(DefaultSubscriptionRegistry.java:98) at org.springframework.messaging.simp.broker.AbstractSubscriptionRegistry.unregisterSubscription(AbstractSubscriptionRegistry.java:91) at org.springframework.messaging.simp.broker.SimpleBrokerMessageHandler.handleMessageInternal(SimpleBrokerMessageHandler.java:129) at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:177) at org.springframework.messaging.support.ExecutorSubscribableChannel$1.run(ExecutorSubscribableChannel.java:70) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)
    via by Serhii Marchuk,
  • *Summary description* We have a product acceptance test suite that uses Thucydides & JUnit; this suite is one module in a maven multi-module project. Building the acceptance test module in isolation works perfectly well. Building the acceptance test module as a part of the aggregator project fails. *Reproduction steps:* * Restore the attached project * For verification: Navigate to the thucydidestests module and run mvn verify - the build should succeed. * In the top-level directory (aggregatorbug), run mvn verify *Expected result:* The project builds and the tests run to completion. *Actual result:* The tests fail after the first (in this example, only) test class, with the folowing exception: {quote} [ERROR] Failed to execute goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test (default) on project thucydidestests: Execution default o f goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test failed: java.lang.reflect.InvocationTargetException; nested exception is java.lan g.reflect.InvocationTargetException: null: java.lang.NullPointerException; nested exception is java.lang.NullPointerException: null -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test (default) on project thucydidestests: Execution default of goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test failed: java.lang.reflect.Invocat ionTargetException; nested exception is java.lang.reflect.InvocationTargetException: null at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default of goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test f ailed: java.lang.reflect.InvocationTargetException; nested exception is java.lang.reflect.InvocationTargetException: null at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) ... 19 more Caused by: org.apache.maven.surefire.util.SurefireReflectionException: java.lang.reflect.InvocationTargetException; nested exception is java.lang.reflect.Inv ocationTargetException: null at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:197) at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165) at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85) at org.apache.maven.plugin.surefire.InPluginVMSurefireStarter.runSuitesInProcess(InPluginVMSurefireStarter.java:74) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:194) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAllProviders(AbstractSurefireMojo.java:176) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:135) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:98) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) ... 20 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189) ... 28 more Caused by: org.apache.maven.surefire.testset.TestSetFailedException: java.lang.NullPointerException; nested exception is java.lang.NullPointerException: null at org.apache.maven.surefire.common.junit4.JUnit4RunListener.rethrowAnyTestMechanismFailures(JUnit4RunListener.java:166) at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:63) at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:139) ... 33 more Caused by: java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:332) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:987) at org.apache.maven.surefire.junitcore.ConcurrentReporterManager.getTestSet(ConcurrentReporterManager.java:157) at org.apache.maven.surefire.junitcore.ConcurrentReporterManager.getOrCreateTestMethod(ConcurrentReporterManager.java:127) at org.apache.maven.surefire.junitcore.ConcurrentReporterManager.testError(ConcurrentReporterManager.java:83) at org.apache.maven.surefire.common.junit4.JUnit4RunListener.testFailure(JUnit4RunListener.java:110) at org.junit.runner.notification.RunNotifier$4.notifyListener(RunNotifier.java:139) at org.junit.runner.notification.RunNotifier$SafeNotifier.run(RunNotifier.java:61) at org.junit.runner.notification.RunNotifier.fireTestFailures(RunNotifier.java:134) at org.junit.runner.notification.RunNotifier.fireTestFailure(RunNotifier.java:128) at org.junit.internal.runners.model.EachTestNotifier.addFailure(EachTestNotifier.java:23) at org.junit.runners.ParentRunner.run(ParentRunner.java:315) at org.junit.runner.JUnitCore.run(JUnitCore.java:160) at org.junit.runner.JUnitCore.run(JUnitCore.java:138) at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:62) ... 34 more {quote} *Additional information:* When running with a debugger, the problem was tracked down to the following: {quote} null: Failed to generate reports using net.thucydides.core.reports.xml.XMLTestOutcomeReporter@7dc53a1d java.io.IOException: Directory 'target/site/thucydides' could not be created {quote}
    via by gareth.bragg,
  • *Summary description* We have a product acceptance test suite that uses Thucydides & JUnit; this suite is one module in a maven multi-module project. Building the acceptance test module in isolation works perfectly well. Building the acceptance test module as a part of the aggregator project fails. *Reproduction steps:* * Restore the attached project * For verification: Navigate to the thucydidestests module and run mvn verify - the build should succeed. * In the top-level directory (aggregatorbug), run mvn verify *Expected result:* The project builds and the tests run to completion. *Actual result:* The tests fail after the first (in this example, only) test class, with the folowing exception: {quote} [ERROR] Failed to execute goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test (default) on project thucydidestests: Execution default o f goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test failed: java.lang.reflect.InvocationTargetException; nested exception is java.lan g.reflect.InvocationTargetException: null: java.lang.NullPointerException; nested exception is java.lang.NullPointerException: null -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test (default) on project thucydidestests: Execution default of goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test failed: java.lang.reflect.Invocat ionTargetException; nested exception is java.lang.reflect.InvocationTargetException: null at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default of goal org.apache.maven.plugins:maven-failsafe-plugin:2.12:integration-test f ailed: java.lang.reflect.InvocationTargetException; nested exception is java.lang.reflect.InvocationTargetException: null at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) ... 19 more Caused by: org.apache.maven.surefire.util.SurefireReflectionException: java.lang.reflect.InvocationTargetException; nested exception is java.lang.reflect.Inv ocationTargetException: null at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:197) at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165) at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85) at org.apache.maven.plugin.surefire.InPluginVMSurefireStarter.runSuitesInProcess(InPluginVMSurefireStarter.java:74) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:194) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAllProviders(AbstractSurefireMojo.java:176) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:135) at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:98) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) ... 20 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189) ... 28 more Caused by: org.apache.maven.surefire.testset.TestSetFailedException: java.lang.NullPointerException; nested exception is java.lang.NullPointerException: null at org.apache.maven.surefire.common.junit4.JUnit4RunListener.rethrowAnyTestMechanismFailures(JUnit4RunListener.java:166) at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:63) at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:139) ... 33 more Caused by: java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:332) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:987) at org.apache.maven.surefire.junitcore.ConcurrentReporterManager.getTestSet(ConcurrentReporterManager.java:157) at org.apache.maven.surefire.junitcore.ConcurrentReporterManager.getOrCreateTestMethod(ConcurrentReporterManager.java:127) at org.apache.maven.surefire.junitcore.ConcurrentReporterManager.testError(ConcurrentReporterManager.java:83) at org.apache.maven.surefire.common.junit4.JUnit4RunListener.testFailure(JUnit4RunListener.java:110) at org.junit.runner.notification.RunNotifier$4.notifyListener(RunNotifier.java:139) at org.junit.runner.notification.RunNotifier$SafeNotifier.run(RunNotifier.java:61) at org.junit.runner.notification.RunNotifier.fireTestFailures(RunNotifier.java:134) at org.junit.runner.notification.RunNotifier.fireTestFailure(RunNotifier.java:128) at org.junit.internal.runners.model.EachTestNotifier.addFailure(EachTestNotifier.java:23) at org.junit.runners.ParentRunner.run(ParentRunner.java:315) at org.junit.runner.JUnitCore.run(JUnitCore.java:160) at org.junit.runner.JUnitCore.run(JUnitCore.java:138) at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:62) ... 34 more {quote} *Additional information:* When running with a debugger, the problem was tracked down to the following: {quote} null: Failed to generate reports using net.thucydides.core.reports.xml.XMLTestOutcomeReporter@7dc53a1d java.io.IOException: Directory 'target/site/thucydides' could not be created {quote}
    via by gareth.bragg,
  • Hive bulk load into HBase
    via by Unknown author,
  • NullPointerException
    via GitHub by Usnul
    ,
    • java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:332) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:987) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry$SessionSubscriptionInfo.getSubscriptions(DefaultSubscriptionRegistry.java:315) at org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry.removeSubscriptionInternal(DefaultSubscriptionRegistry.java:98) at org.springframework.messaging.simp.broker.AbstractSubscriptionRegistry.unregisterSubscription(AbstractSubscriptionRegistry.java:97) at org.springframework.messaging.simp.broker.SimpleBrokerMessageHandler.handleMessageInternal(SimpleBrokerMessageHandler.java:154) at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:171) at org.springframework.messaging.support.ExecutorSubscribableChannel$1.run(ExecutorSubscribableChannel.java:70) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722)

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