On 04/07/2013, at 11:09 PM, Szczepan Faber <szczepan.fa...@gradleware.com> 
wrote:

> The task artifacts cache location is different in every Gradle version (see 
> the file path) so we should be able to change the format at will.
> 
> Not sure what the problem is. Adam would have few theories right of the bat I 
> think. I've asked at the forumes if the issue is reproducible.

My guess is that it's a problem with the locking changes, such that two threads 
(maybe in the same process, maybe in different processes) are scribbling into 
the file at the same time.

> 
> Cheers!
> 
> 
> On Thu, Jul 4, 2013 at 1:48 PM, Luke Daley <luke.da...@gradleware.com> wrote:
> We changed the format of the file hash cache in this release.
> 
> Do we have an issue for detecting this kind of change and pre-emptively 
> invalidating the cache?
> 
> Begin forwarded message:
> 
>> From: Gradle <noreply.gra...@getsatisfaction.com>
>> Subject: New problem: Corrupt cache using Gradle 1.7-rc-1?
>> Date: 4 July 2013 12:38:56 PM GMT+01:00
>> To: luke.da...@gradleware.com
>> 
>> Cédric Champeau just reported this problem in Gradle:
>> 
>> Corrupt cache using Gradle 1.7-rc-1?
>> 
>> The Groovy build just moved to Gradle 1.7-rc-1. While a first compilation 
>> worked, now if I run this: 
>> 
>> ./gradlew test installGroovy 
>> 
>> I'm getting this error: 
>> 
>> 
>> * Exception is: 
>> org.gradle.api.UncheckedIOException: Could not read entry 
>> '/home/cchampeau/DEV/PROJECTS/GITHUB/groovy-core/target/classes/main/org/codehaus/groovy/transform/sc/StaticCompilationVisitor.class'
>>  from cache fileHashes.bin 
>> (/home/cchampeau/DEV/PROJECTS/GITHUB/groovy-core/.gradle/1.7-rc-1/taskArtifacts/fileHashes.bin).
>>  
>> at 
>> org.gradle.cache.internal.btree.BTreePersistentIndexedCache.get(BTreePersistentIndexedCache.java:127)
>>  
>> at 
>> org.gradle.cache.internal.MultiProcessSafePersistentIndexedCache$1.create(MultiProcessSafePersistentIndexedCache.java:39)
>>  
>> at 
>> org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.readFile(DefaultFileLockManager.java:178)
>>  
>> at 
>> org.gradle.cache.internal.DefaultCacheAccess$UnitOfWorkFileAccess.readFile(DefaultCacheAccess.java:357)
>>  
>> at 
>> org.gradle.cache.internal.MultiProcessSafePersistentIndexedCache.get(MultiProcessSafePersistentIndexedCache.java:37)
>>  
>> at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source) 
>> at 
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>  
>> at java.lang.reflect.Method.invoke(Method.java:601) 
>> at 
>> org.gradle.listener.LazyCreationProxy$LazyInvocationHandler.invoke(LazyCreationProxy.java:49)
>>  
>> at $Proxy23.get(Unknown Source) 
>> at 
>> org.gradle.api.internal.changedetection.state.CachingHasher.hash(CachingHasher.java:34)
>>  
>> at 
>> org.gradle.api.internal.changedetection.state.DefaultFileSnapshotter$1.run(DefaultFileSnapshotter.java:48)
>>  
>> at org.gradle.internal.Factories$1.create(Factories.java:22) 
>> at 
>> org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:143)
>>  
>> at 
>> org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:131)
>>  
>> at 
>> org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134)
>>  
>> at 
>> org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:74)
>>  
>> at 
>> org.gradle.api.internal.changedetection.state.DefaultFileSnapshotter.snapshot(DefaultFileSnapshotter.java:44)
>> at 
>> org.gradle.api.internal.changedetection.state.OutputFilesSnapshotter.snapshot(OutputFilesSnapshotter.java:81)
>> at 
>> org.gradle.api.internal.changedetection.state.OutputFilesSnapshotter.snapshot(OutputFilesSnapshotter.java:41)
>> at 
>> org.gradle.api.internal.changedetection.rules.OutputFilesStateChangeRule.create(OutputFilesStateChangeRule.java:34)
>>  
>> at 
>> org.gradle.api.internal.changedetection.rules.TaskUpToDateState.<init>(TaskUpToDateState.java:45)
>>  
>> at 
>> org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.getStates(DefaultTaskArtifactStateRepository.java:127)
>>  
>> at 
>> org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.isUpToDate(DefaultTaskArtifactStateRepository.java:69)
>>  
>> at 
>> org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:50)
>>  
>> at 
>> org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
>>  
>> at 
>> org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)
>>  
>> at 
>> org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
>>  
>> at 
>> org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
>>  
>> at 
>> org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
>>  
>> at 
>> org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:286)
>>  
>> at 
>> org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:86)
>>  
>> at 
>> org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:72)
>>  
>> at 
>> org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTaskWithCacheLock(AbstractTaskPlanExecutor.java:64)
>>  
>> at 
>> org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:54)
>>  
>> at 
>> org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$1.run(DefaultTaskPlanExecutor.java:34)
>>  
>> at org.gradle.internal.Factories$1.create(Factories.java:22) 
>> at 
>> org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:214)
>>  
>> at 
>> org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:276)
>>  
>> at 
>> org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation(DefaultPersistentDirectoryStore.java:142)
>>  
>> at 
>> org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:78)
>>  
>> at 
>> org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:32)
>>  
>> at 
>> org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:89)
>>  
>> at 
>> org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
>>  
>> at 
>> org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
>>  
>> at 
>> org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
>>  
>> at 
>> org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
>>  
>> at 
>> org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
>>  
>> at 
>> org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
>>  
>> at 
>> org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)
>>  
>> at 
>> org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:166)
>>  
>> at 
>> org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113)
>>  
>> at 
>> org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81)
>>  
>> at 
>> org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:64)
>>  
>> at 
>> org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33) 
>> at 
>> org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24) 
>> at 
>> org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:45)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:42)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:24)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.StartStopIfBuildAndStop.execute(StartStopIfBuildAndStop.java:33)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.ReturnResult.execute(ReturnResult.java:34)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:70)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:68)
>>  
>> at org.gradle.util.Swapper.swap(Swapper.java:38) 
>> at 
>> org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:68)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:59)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:45)
>> at 
>> org.gradle.launcher.daemon.server.DaemonStateCoordinator.runCommand(DaemonStateCoordinator.java:186)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy.doBuild(StartBuildOrRespondWithBusy.java:49)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.HandleStop.execute(HandleStop.java:36)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.CatchAndForwardDaemonFailure.execute(CatchAndForwardDaemonFailure.java:32)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
>>  
>> at 
>> org.gradle.launcher.daemon.server.exec.DefaultDaemonCommandExecuter.executeCommand(DefaultDaemonCommandExecuter.java:48)
>>  
>> at 
>> org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.handleCommand(DefaultIncomingConnectionHandler.java:155)
>>  
>> at 
>> org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.receiveAndHandleCommand(DefaultIncomingConnectionHandler.java:128)
>>  
>> at 
>> org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.run(DefaultIncomingConnectionHandler.java:116)
>>  
>> at 
>> org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:66)
>>  
>> at 
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>>  
>> at 
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>>  
>> at java.lang.Thread.run(Thread.java:722) 
>> Caused by: java.lang.ClassCastException: Cannot cast 
>> org.gradle.cache.internal.btree.BTreePersistentIndexedCache$IndexBlock to 
>> org.gradle.cache.internal.btree.BTreePersistentIndexedCache$DataBlock 
>> at java.lang.Class.cast(Class.java:3005) 
>> at 
>> org.gradle.cache.internal.btree.CachingBlockStore.read(CachingBlockStore.java:80)
>>  
>> at 
>> org.gradle.cache.internal.btree.FreeListBlockStore.read(FreeListBlockStore.java:78)
>>  
>> at 
>> org.gradle.cache.internal.btree.StateCheckBlockStore.read(StateCheckBlockStore.java:61)
>>  
>> at 
>> org.gradle.cache.internal.btree.BTreePersistentIndexedCache$IndexBlock.get(BTreePersistentIndexedCache.java:445)
>>  
>> at 
>> org.gradle.cache.internal.btree.BTreePersistentIndexedCache.get(BTreePersistentIndexedCache.java:117)
>>  
>> ... 95 more 
>> 
>> 
>> Looks like my cache is corrupt. Any idea of what's happening?
>> Reply | Notify me when people reply
>> 
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>> 
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> 
> -- 
> Luke Daley
> Principal Engineer, Gradleware 
> http://gradleware.com
> 
> 
> 
> 
> -- 
> Szczepan Faber
> Principal engineer@gradleware; Lead@mockito


--
Adam Murdoch
Gradle Co-founder
http://www.gradle.org
VP of Engineering, Gradleware Inc. - Gradle Training, Support, Consulting
http://www.gradleware.com



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