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From "Tommaso Teofili (Commented) (JIRA)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-2373) Possible bug in FixedFlowController
Date Fri, 17 Feb 2012 09:09:59 GMT

    [ https://issues.apache.org/jira/browse/UIMA-2373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13210151#comment-13210151
] 

Tommaso Teofili commented on UIMA-2373:
---------------------------------------

bq. Possibly a concurrency issue?

Yes, I think so.
That came out when an AE is used from different clients which execute in parallel, so I wonder
if is the usage which is wrong  or we should allow that and thus made a fix for it.
                
> Possible bug in FixedFlowController
> -----------------------------------
>
>                 Key: UIMA-2373
>                 URL: https://issues.apache.org/jira/browse/UIMA-2373
>             Project: UIMA
>          Issue Type: Bug
>    Affects Versions: 2.4.0SDK
>            Reporter: Tommaso Teofili
>
> I am developing a series of Lucene tokenizers which can use UIMA for creating tokens
via extracted annotations.
> While doing a stress test with lots of different strings I experienced the following:
> {noformat}
> [junit] Testsuite: org.apache.lucene.analysis.uima.UIMATypeAwareAnalyzerTest
>     [junit] Tests run: 2, Failures: 0, Errors: 1, Time elapsed: 92,061 sec
>     [junit] 
>     [junit] ------------- Standard Error -----------------
>     [junit] The following exceptions were thrown by threads:
>     [junit] *** Thread: Thread-9 ***
>     [junit] java.lang.RuntimeException: java.io.IOException: org.apache.uima.analysis_engine.AnalysisEngineProcessException
>     [junit] 	at org.apache.lucene.analysis.BaseTokenStreamTestCase$AnalysisThread.run(BaseTokenStreamTestCase.java:289)
>     [junit] Caused by: java.io.IOException: org.apache.uima.analysis_engine.AnalysisEngineProcessException
>     [junit] 	at org.apache.lucene.analysis.uima.UIMATypeAwareAnnotationsTokenizer.incrementToken(UIMATypeAwareAnnotationsTokenizer.java:87)
>     [junit] 	at org.apache.lucene.analysis.BaseTokenStreamTestCase.assertTokenStreamContents(BaseTokenStreamTestCase.java:121)
>     [junit] 	at org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:371)
>     [junit] 	at org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:295)
>     [junit] 	at org.apache.lucene.analysis.BaseTokenStreamTestCase$AnalysisThread.run(BaseTokenStreamTestCase.java:287)
>     [junit] Caused by: org.apache.uima.analysis_engine.AnalysisEngineProcessException
>     [junit] 	at org.apache.uima.analysis_engine.asb.impl.ASB_impl$AggregateCasIterator.processUntilNextOutputCas(ASB_impl.java:701)
>     [junit] 	at org.apache.uima.analysis_engine.asb.impl.ASB_impl$AggregateCasIterator.<init>(ASB_impl.java:409)
>     [junit] 	at org.apache.uima.analysis_engine.asb.impl.ASB_impl.process(ASB_impl.java:342)
>     [junit] 	at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.processAndOutputNewCASes(AggregateAnalysisEngine_impl.java:267)
>     [junit] 	at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBase.java:267)
>     [junit] 	at org.apache.lucene.analysis.uima.BaseUIMATokenizer.analyzeInput(BaseUIMATokenizer.java:57)
>     [junit] 	at org.apache.lucene.analysis.uima.UIMATypeAwareAnnotationsTokenizer.analyzeText(UIMATypeAwareAnnotationsTokenizer.java:73)
>     [junit] 	at org.apache.lucene.analysis.uima.UIMATypeAwareAnnotationsTokenizer.incrementToken(UIMATypeAwareAnnotationsTokenizer.java:85)
>     [junit] 	... 4 more
>     [junit] Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 2
>     [junit] 	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
>     [junit] 	at java.util.ArrayList.get(ArrayList.java:322)
>     [junit] 	at org.apache.uima.flow.impl.FixedFlowController$FixedFlowObject.next(FixedFlowController.java:216)
>     [junit] 	at org.apache.uima.analysis_engine.asb.impl.FlowContainer.next(FlowContainer.java:98)
>     [junit] 	at org.apache.uima.analysis_engine.asb.impl.ASB_impl$AggregateCasIterator.processUntilNextOutputCas(ASB_impl.java:667)
>     [junit] 	... 11 more
> {noformat}
> I'm debugging it and see if I can come up with the exact bug (and fix) :)

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