We are facing some NPEs during dependency resolving from cache in our build environment. Unfortunetaly it doesn’t happen in every build but justs sporadic. From my understanding of the source code mentioned in the stacktrace it should be the getLock() method which returns a null instead of a FileLock instance.
Gradle Version: 2.14.1
Operating System and JVM version: Windows Server 2008R2
Is this a regression? If yes, which version of Gradle do you know it last worked for?
It only happens sporadic - not in every build - could be a locking problem.
Stacktrace:
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.resolveComponentMetaData(ErrorHandlingModuleComponentRepository.java:91)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ComponentMetaDataResolveState.process(ComponentMetaDataResolveState.java:66)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ComponentMetaDataResolveState.resolve(ComponentMetaDataResolveState.java:45)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.findBestMatch(RepositoryChainComponentMetaDataResolver.java:116)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.findBestMatch(RepositoryChainComponentMetaDataResolver.java:99)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolveModule(RepositoryChainComponentMetaDataResolver.java:72)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolve(RepositoryChainComponentMetaDataResolver.java:59)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.ComponentResolversChain$ComponentMetaDataResolverChain.resolve(ComponentResolversChain.java:80)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.clientmodule.ClientModuleResolver.resolve(ClientModuleResolver.java:44)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphBuilder$ModuleVersionResolveState.resolve(DependencyGraphBuilder.java:564)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphBuilder$ModuleVersionResolveState.getMetaData(DependencyGraphBuilder.java:574)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphBuilder$DependencyEdge.calculateTargetConfigurations(DependencyGraphBuilder.java:260)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphBuilder$DependencyEdge.attachToTargetConfigurations(DependencyGraphBuilder.java:234)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphBuilder.traverseGraph(DependencyGraphBuilder.java:141)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.graph.DependencyGraphBuilder.resolve(DependencyGraphBuilder.java:79)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.DefaultArtifactDependencyResolver$1.execute(DefaultArtifactDependencyResolver.java:90)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.DefaultArtifactDependencyResolver$1.execute(DefaultArtifactDependencyResolver.java:80)
error 13-Sep-2016 09:37:17 at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.DefaultIvyContextManager.withIvy(DefaultIvyContextManager.java:61)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.DefaultIvyContextManager.withIvy(DefaultIvyContextManager.java:39)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.resolveengine.DefaultArtifactDependencyResolver.resolve(DefaultArtifactDependencyResolver.java:80)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.CacheLockingArtifactDependencyResolver$1.run(CacheLockingArtifactDependencyResolver.java:41)
error 13-Sep-2016 09:37:17 at org.gradle.internal.Factories$1.create(Factories.java:22)
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:192)
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:175)
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:106)
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultCacheFactory$ReferenceTrackingCache.useCache(DefaultCacheFactory.java:187)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.DefaultCacheLockingManager.useCache(DefaultCacheLockingManager.java:64)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.CacheLockingArtifactDependencyResolver.resolve(CacheLockingArtifactDependencyResolver.java:39)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.DefaultConfigurationResolver.resolve(DefaultConfigurationResolver.java:91)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.SelfResolvingDependencyConfigurationResolver.resolve(SelfResolvingDependencyConfigurationResolver.java:40)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ShortCircuitEmptyConfigurationResolver.resolve(ShortCircuitEmptyConfigurationResolver.java:52)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ErrorHandlingConfigurationResolver.resolve(ErrorHandlingConfigurationResolver.java:43)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.resolveGraphIfRequired(DefaultConfiguration.java:372)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.resolveNow(DefaultConfiguration.java:347)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.getBuildDependencies(DefaultConfiguration.java:417)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration_Decorated.getBuildDependencies(Unknown Source)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext$TaskGraphImpl.getNodeValues(CachingTaskDependencyResolveContext.java:92)
error 13-Sep-2016 09:37:17 at org.gradle.internal.graph.CachingDirectedGraphWalker$GraphWithEmpyEdges.getNodeValues(CachingDirectedGraphWalker.java:202)
error 13-Sep-2016 09:37:17 at org.gradle.internal.graph.CachingDirectedGraphWalker.doSearch(CachingDirectedGraphWalker.java:112)
error 13-Sep-2016 09:37:17 at org.gradle.internal.graph.CachingDirectedGraphWalker.findValues(CachingDirectedGraphWalker.java:64)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.doResolve(CachingTaskDependencyResolveContext.java:76)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.resolve(CachingTaskDependencyResolveContext.java:65)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.getDependencies(CachingTaskDependencyResolveContext.java:55)
error 13-Sep-2016 09:37:17 at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.addToTaskGraph(DefaultTaskExecutionPlan.java:139)
error 13-Sep-2016 09:37:17 at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.addTasks(DefaultTaskGraphExecuter.java:98)
error 13-Sep-2016 09:37:17 at org.gradle.execution.TaskNameResolvingBuildConfigurationAction.configure(TaskNameResolvingBuildConfigurationAction.java:47)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter.access$000(DefaultBuildConfigurationActionExecuter.java:25)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter$1.proceed(DefaultBuildConfigurationActionExecuter.java:54)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultTasksBuildExecutionAction.configure(DefaultTasksBuildExecutionAction.java:44)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter.access$000(DefaultBuildConfigurationActionExecuter.java:25)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter$1.proceed(DefaultBuildConfigurationActionExecuter.java:54)
error 13-Sep-2016 09:37:17 at org.gradle.execution.ExcludedTaskFilteringBuildConfigurationAction.configure(ExcludedTaskFilteringBuildConfigurationAction.java:47)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48)
error 13-Sep-2016 09:37:17 at org.gradle.execution.DefaultBuildConfigurationActionExecuter.select(DefaultBuildConfigurationActionExecuter.java:36)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher$3.run(DefaultGradleLauncher.java:142)
error 13-Sep-2016 09:37:17 at org.gradle.internal.Factories$1.create(Factories.java:22)
error 13-Sep-2016 09:37:17 at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
error 13-Sep-2016 09:37:17 at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:139)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)
error 13-Sep-2016 09:37:17 at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
error 13-Sep-2016 09:37:17 at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)
error 13-Sep-2016 09:37:17 at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:99)
error 13-Sep-2016 09:37:17 at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:48)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:81)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:46)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:52)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
error 13-Sep-2016 09:37:17 at org.gradle.util.Swapper.swap(Swapper.java:38)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java:40)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java:41)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
error 13-Sep-2016 09:37:17 at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:237)
error 13-Sep-2016 09:37:17 at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
error 13-Sep-2016 09:37:17 at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
error 13-Sep-2016 09:37:17 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
error 13-Sep-2016 09:37:17 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
error 13-Sep-2016 09:37:17 at java.lang.Thread.run(Thread.java:745)
error 13-Sep-2016 09:37:17 Caused by: java.lang.NullPointerException
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultCacheAccess$UnitOfWorkFileAccess.writeFile(DefaultCacheAccess.java:404)
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultMultiProcessSafePersistentIndexedCache.getCache(DefaultMultiProcessSafePersistentIndexedCache.java:91)
error 13-Sep-2016 09:37:17 at org.gradle.cache.internal.DefaultMultiProcessSafePersistentIndexedCache.get(DefaultMultiProcessSafePersistentIndexedCache.java:33)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.modulecache.DefaultModuleMetaDataCache.getCachedModuleDescriptor(DefaultModuleMetaDataCache.java:66)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.CachingModuleComponentRepository$LocateInCacheRepositoryAccess.resolveComponentMetaDataFromCache(CachingModuleComponentRepository.java:158)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.CachingModuleComponentRepository$LocateInCacheRepositoryAccess.resolveComponentMetaData(CachingModuleComponentRepository.java:154)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.BaseModuleComponentRepositoryAccess.resolveComponentMetaData(BaseModuleComponentRepositoryAccess.java:42)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.memcache.InMemoryCachedModuleComponentRepository$CachedAccess.resolveComponentMetaData(InMemoryCachedModuleComponentRepository.java:75)
error 13-Sep-2016 09:37:17 at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.resolveComponentMetaData(ErrorHandlingModuleComponentRepository.java:89)
error 13-Sep-2016 09:37:17 ... 106 more ```