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

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10.2AS
• Component/s: Async Scaleout
• Assignee: Jaroslaw Cwiklik
• Reporter: Jaroslaw Cwiklik
• Created: 29/Mar/17 13:58
• Updated: 30/Mar/17 14:12
• Resolved: 30/Mar/17 14:12

Description

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.