[jira] [Closed] (UIMA-5391) UIMA-AS: sendAndReceive() should throw Exception when client is in shutdown mode

["Jerry Cwiklik (JIRA)" <de...@uima.apache.org>]

     [ https://issues.apache.org/jira/browse/UIMA-5391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jerry Cwiklik closed UIMA-5391.
-------------------------------
    Resolution: Fixed

Modified to throw an exception from sendAndReceive() when client is in shutdown mode and a thread awaits a reply from a remote service.

> UIMA-AS: sendAndReceive() should throw Exception when client is in shutdown mode
> --------------------------------------------------------------------------------
>
>                 Key: UIMA-5391
>                 URL: https://issues.apache.org/jira/browse/UIMA-5391
>             Project: UIMA
>          Issue Type: Bug
>          Components: Async Scaleout
>            Reporter: Jerry Cwiklik
>            Assignee: Jerry Cwiklik
>             Fix For: 2.10.0AS
>
>
> When  an application calls UIMA-AS client sendAndReceive() its thread will block until a reply comes back or stop() is called. 
> While a thread blocks in sendAndReceive() a System.exit() may be called causing the UIMA-AS client ShutdownHook to call stop(). This method will cleanup resources including a semaphore where an application thread blocks in sendAndReceive. In this case, the sendAndReceive() simply returns realizing that the client is not in a running state. The application is not aware that the sendAndReceive() was essentially interrupted as a reply had not been received. The application may consider the CAS as processed as there was no exception,
> The sendAndReceive() should throw an exception if UIMA-AS client stop() was called while an application thread blocked awaiting reply from a service. Throw ResourceProcessException with cause = UimaAsClientStoppingException. This will let the application know about the cause of the interrupt.



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