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https://issues.apache.org/jira/browse/UIMA-5957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16741960#comment-16741960
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Richard Eckart de Castilho commented on UIMA-5957:
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The uimaFIT pipeline runners by default always create a new resource manager
unless there is an active UimaContext attached to the current thread. If this
is the case, then its RM is used (see
DefaultResourceManagerCreator.newResourceManager()). So either you should
ensure that there is a UimaContext available or you'd need to implement your
own ResourceManagerCreator.
> JCasIterable and JCasIterator in SimplePipeline should use the same
> ResourceManager
> -----------------------------------------------------------------------------------
>
> Key: UIMA-5957
> URL: https://issues.apache.org/jira/browse/UIMA-5957
> Project: UIMA
> Issue Type: Improvement
> Components: uimaFIT
> Affects Versions: 2.4.0uimaFIT
> Reporter: Peter Klügl
> Priority: Major
>
> Using SimplePipeline with JCas cover classes and Ruta leads currently to
> class loader switching for each annotator since the JCas and the annotator
> refer to a different uima class loader due to the resource managers.
> Additionally, Ruta needs to perform internal reindexing, which can lead to
> observed but undefined problems.
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