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https://issues.apache.org/jira/browse/UIMA-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-3001.
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Resolution: Fixed
> Fix UIMA-AS CAS accounting to prevent loosing CASes
> ---------------------------------------------------
>
> Key: UIMA-3001
> URL: https://issues.apache.org/jira/browse/UIMA-3001
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.4.0AS
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.4.1AS
>
>
> In complex scenarios involving many CMs and nested aggregates the uima-as
> fails to account for CASes correctly. In scenarios where the parent and child
> flow together, the uima-as can double decrement child count of the ancestor
> CAS causing it to leave an aggregate while its children are still in play.
> Such scenario may lead to NullPointerException and a hang.
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