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https://issues.apache.org/jira/browse/UIMA-1766?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12858427#action_12858427
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Jörn Kottmann commented on UIMA-1766:
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My test shows that the issue is fixed now. A test instance analyzed 650K CASes
and in the memory dump only 38 instances of the ServicePerformance object exist.
> Fix Memory Leak in UIMA AS Cas Multiplier Service
> -------------------------------------------------
>
> Key: UIMA-1766
> URL: https://issues.apache.org/jira/browse/UIMA-1766
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.3AS
> Reporter: Jerry Cwiklik
>
> When running an Aggregate with a colocated Cas Multiplier per CAS statistics
> are not being removed from a Map maintained by the Cas Multiplier service. As
> more CASes are sent to the CM, instances of ServicePerformance object are
> added to the Map and never removed leading to a memory leak and eventual OOM
> error.
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