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https://issues.apache.org/jira/browse/NIFI-1668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302360#comment-15302360
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ASF GitHub Bot commented on NIFI-1668:
--------------------------------------
Github user JPercivall commented on the pull request:
https://github.com/apache/nifi/pull/324#issuecomment-221924674
Ah that is an important distinction in regards to the "after" block but
then how come the that issue wouldn't cause all following tests to fail (since
FC.shutdown is never executed)?
The first line of the javadoc on ThreadPoolExecutor.execute() says
"Executes the given task sometime in the future." This means there is no
guarantee that any of the threads will get executed before "countDownCounter"
finishes. If it doesn't execute any, and the test fails, it is due to the
system never scheduling the thread and not due to the thing being tested
failing.
> Intermittent Test Failure for TestProcessorLifecycle
> ----------------------------------------------------
>
> Key: NIFI-1668
> URL: https://issues.apache.org/jira/browse/NIFI-1668
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Bryan Bende
> Assignee: Oleg Zhurakousky
> Priority: Minor
> Fix For: 0.7.0
>
>
> A build on Travis produced the errors below, but they are not seen frequently:
> validateProcessorCanBeStoppedWhenOnTriggerThrowsException on
> validateProcessorCanBeStoppedWhenOnTriggerThrowsException(org.apache.nifi.controller.scheduling.TestProcessorLifecycle)(org.apache.nifi.controller.scheduling.TestProcessorLifecycle)
> Time elapsed: 0.085 sec <<< FAILURE!
> java.nio.channels.OverlappingFileLockException: null
> at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255)
> at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152)
> at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:1043)
> at java.nio.channels.FileChannel.lock(FileChannel.java:1052)
> at
> org.wali.MinimalLockingWriteAheadLog.<init>(MinimalLockingWriteAheadLog.java:179)
> at
> org.wali.MinimalLockingWriteAheadLog.<init>(MinimalLockingWriteAheadLog.java:108)
> at
> org.apache.nifi.controller.state.providers.local.WriteAheadLocalStateProvider.init(WriteAheadLocalStateProvider.java:97)
> at
> org.apache.nifi.controller.state.providers.AbstractStateProvider.initialize(AbstractStateProvider.java:34)
> at
> org.apache.nifi.controller.state.manager.StandardStateManagerProvider.createStateProvider(StandardStateManagerProvider.java:186)
> at
> org.apache.nifi.controller.state.manager.StandardStateManagerProvider.createLocalStateProvider(StandardStateManagerProvider.java:80)
> at
> org.apache.nifi.controller.state.manager.StandardStateManagerProvider.create(StandardStateManagerProvider.java:66)
> at
> org.apache.nifi.controller.FlowController.<init>(FlowController.java:435)
> at
> org.apache.nifi.controller.FlowController.createStandaloneInstance(FlowController.java:366)
> at
> org.apache.nifi.controller.scheduling.TestProcessorLifecycle.buildFlowControllerForTest(TestProcessorLifecycle.java:642)
> at
> org.apache.nifi.controller.scheduling.TestProcessorLifecycle.validateProcessorCanBeStoppedWhenOnTriggerThrowsException(TestProcessorLifecycle.java:477)
> Results :
> Failed tests:
>
> TestProcessorLifecycle.validateDisableOperation:117->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateLifecycleOperationOrderWithConcurrentCallsToStartStop:254->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateProcessScheduledAfterAdministrativeDelayDueToTheOnScheduledException:347->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateProcessorCanBeStoppedWhenOnScheduledBlocksIndefinitelyInterruptable:413->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateProcessorCanBeStoppedWhenOnScheduledBlocksIndefinitelyUninterruptable:443->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateProcessorCanBeStoppedWhenOnScheduledConstantlyFails:380->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateProcessorCanBeStoppedWhenOnTriggerThrowsException:477->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateProcessorUnscheduledAndStoppedWhenStopIsCalledBeforeProcessorFullyStarted:311->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateStartSucceedsOnProcessorWithEnabledService:554->buildFlowControllerForTest:642
> » OverlappingFileLock
>
> TestProcessorLifecycle.validateStopCallsAreMeaninglessIfProcessorNotStarted:187->buildFlowControllerForTest:642
> » OverlappingFileLock
> TestProcessorLifecycle.validateSuccessfullAndOrderlyShutdown:239
> expected:<3> but was:<2>
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