UIMA AS process does not terminate reliably
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Key: UIMA-2038
URL: https://issues.apache.org/jira/browse/UIMA-2038
Project: UIMA
Issue Type: Bug
Components: Async Scaleout
Affects Versions: 2.3.1AS
Reporter: Jerry Cwiklik
Assignee: Jerry Cwiklik
UIMA AS two stop options dont seem to work reliably. Neither 's' and 'q' on the
command line force a clean shutdown of the process. Actually, there is also a
related problem. Namely, when the shutdown succeeds it appears that the Shared
Connection that all Spring listeners use is not closed which leads to an ugly
exception on the broker console. This happens every time the service is
terminated. Review listeners shutdown code and make sure that when the last
listener terminates the connection is stopped before the process exits. Also,
make sure that uima threads from custom pools are daemon threads to allow the
jvm to collect them on shutdown. NOTE: AMQ version 4.x internal threads are not
daemon threads and there is special code in the listener to wait for them to
stop before exiting. Newer AMQ version use daemon threads so shutting down AMQ
is much more reliable.
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