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https://issues.apache.org/jira/browse/UIMA-2736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-2736.
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Resolution: Fixed
Modified client code to throw away child CASes sent from the CM while running
in synchronous mode
> UIMA-AS client may hang when sending CASes to remote CM service
> ---------------------------------------------------------------
>
> Key: UIMA-2736
> URL: https://issues.apache.org/jira/browse/UIMA-2736
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.4.0AS
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.4.1AS
>
>
> Using UIMA-AS client sendAndReceive() API to send CASes to remote Cas
> Multiplier can cause the client to hang. With the synchronous API, the client
> is receiving child CASes from the CM and deserializes them using its internal
> Cas Pool. The child CASes are never delivered to an application since the
> callbacks are not supported for sync API. The code never releases the CASes
> causing a hang in the client due to exhausted Cas Pool.
> Modify the client code to ignore child CASes produced from an input CAS sent
> via synchronous sendAndReceive(). While ignoring such CASes, the code should
> still send FreeCasRequest to the remote CM to prevent the CM from starving
> its Cas Pool. The new code should not attempt to deserialize child CASes and
> just throw away the message containing serialized CAS.
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