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From "Marshall Schor (Closed) (JIRA)" <...@uima.apache.org>
Subject [jira] [Closed] (UIMA-2308) UIMA CasCreationUtils throws NPE when multiple threads in UIMA AS call defineCasPool
Date Fri, 16 Dec 2011 21:20:31 GMT

     [ https://issues.apache.org/jira/browse/UIMA-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marshall Schor closed UIMA-2308.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 2.4.1SDK
    
> UIMA CasCreationUtils throws NPE when multiple threads in UIMA AS call defineCasPool
> ------------------------------------------------------------------------------------
>
>                 Key: UIMA-2308
>                 URL: https://issues.apache.org/jira/browse/UIMA-2308
>             Project: UIMA
>          Issue Type: Bug
>            Reporter: Jerry Cwiklik
>            Assignee: Marshall Schor
>             Fix For: 2.4.0AS, 2.4.1SDK
>
>
> UIMA CasCreationUtils throws NPE from setupTypePriorities() when UIMA AS scales AEs in
multiple threads. The NPE is due to thread safety issue in UIMA caused by lazy initialization
of CAS pools. Seems to be triggered when large type system is used. Synchronize UIMA AS org.apache.uima.aae.EECasManager_impl.defineCasPool()
to make sure only one thread at a time executes the code.

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