UIMA AS process error handler incorrectly handles a CAS that arrives after a
timeout
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Key: UIMA-1850
URL: https://issues.apache.org/jira/browse/UIMA-1850
Project: UIMA
Issue Type: Bug
Components: Async Scaleout
Affects Versions: 2.3AS
Reporter: Jerry Cwiklik
Assignee: Jerry Cwiklik
The ProcessErrorHandler drops a CAS that arrives from a delegate late (after a
timeout) without first checking if the CAS has any children. This leads to NPE
exception(s) and possible hangs. The code should first check if the CAS has any
children being processed and if so, leave the CAS in play. The parent CAS will
eventually be dropped when its last child is processed.
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