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https://issues.apache.org/jira/browse/UIMA-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-2308.
-------------------------------
Resolution: Fixed
Synchronized access to defineCasPool() using class level locking to prevents
concurrent execution that leads to NPE.
> 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: Jerry Cwiklik
> Fix For: 2.4.0AS
>
>
> 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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