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https://issues.apache.org/jira/browse/UIMA-1630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-1630.
-------------------------------
Resolution: Fixed
synchronized access to the childControllerList to prevent concurrency problems
that may lead to IndexOutOfBoundsException
> Fix IndexOutOfBounds exception in BaseAnalysisEngineController
> --------------------------------------------------------------
>
> Key: UIMA-1630
> URL: https://issues.apache.org/jira/browse/UIMA-1630
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.3AS
>
>
> There seems to be a synchronization problem in BaseAnalysisEngineController
> leading to the exception like this:
> Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0
> at java.util.ArrayList.RangeCheck(ArrayList.java:547)
> at java.util.ArrayList.get(ArrayList.java:322)
> at
> org.apache.uima.aae.controller.BaseAnalysisEngineController.stop(BaseAnalysisEngineController.java:1741)
> at
> org.apache.uima.aae.controller.BaseAnalysisEngineController.stop(BaseAnalysisEngineController.java:1707)
> at
> org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.stop(AggregateAnalysisEngineController_impl.java:2753)
> at
> org.apache.uima.aae.controller.BaseAnalysisEngineController.terminate(BaseAnalysisEngineController.java:1967)
> at
> org.apache.uima.aae.controller.BaseAnalysisEngineController.terminate(BaseAnalysisEngineController.java:1940)
> at
> org.apache.uima.adapter.jms.activemq.SpringContainerDeployer.initializeContainer(SpringContainerDeployer.java:313)
> at
> org.apache.uima.adapter.jms.activemq.SpringContainerDeployer.deploy(SpringContainerDeployer.java:390)
> ... 7 more
> The aggregate controller attempts to stop its colocated delegates and fails
> with IndexOutOfBounds. It looks like one thread is trying to stop, while
> another is cleaning up a HashMap. Need to synchronize these activities.
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