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https://issues.apache.org/jira/browse/UIMA-1248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor resolved UIMA-1248.
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Resolution: Fixed
Fix Version/s: 2.6.0SDK
Assignee: Marshall Schor (was: Adam Lally)
> ResourceManager initialization is not thread-safe
> -------------------------------------------------
>
> Key: UIMA-1248
> URL: https://issues.apache.org/jira/browse/UIMA-1248
> Project: UIMA
> Issue Type: Bug
> Components: Core Java Framework
> Affects Versions: 2.2.2, 2.3
> Reporter: Adam Lally
> Assignee: Marshall Schor
> Priority: Minor
> Fix For: 2.6.0SDK
>
>
> If multiple threads concurrently call UIMAFramework.produceAnalysisEngine and
> pass the same instance of ResourceManager as an argument, you can get
> intermittent exceptions in the ResourceManager such as:
> java.lang.ArrayIndexOutOfBoundsException
> at java.lang.System.arraycopy(Native Method)
> at java.util.ArrayList.ensureCapacity(ArrayList.java:170)
> at java.util.ArrayList.add(ArrayList.java:351)
> at
> org.apache.uima.resource.impl.CasManager_impl.addMetaData(CasManager_impl.java:82)
> at
> org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.initialize(AnalysisEngineImplBase.java:115)
> at
> org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.initialize(AggregateAnalysisEngine_impl.java:126)
> The workaround is to synchronize the calls to
> UIMAFramework.produceAnalysisEngine. However, this is suboptimal if
> annotator initialization is expensive and you want it to be run in parallel
> on multiple cores. We should consider adding synchronization to the
> ResourceManager (and the classes it delegates to such as CasManager) to allow
> this to work.
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