Jerry Cwiklik created UIMA-5814:
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Summary: UIMA-DUCC: agent should support quiesce request
Key: UIMA-5814
URL: https://issues.apache.org/jira/browse/UIMA-5814
Project: UIMA
Issue Type: Improvement
Components: DUCC
Reporter: Jerry Cwiklik
Assignee: Jerry Cwiklik
Fix For: 2.2.3-Ducc
Currently when an agent receives stop request through its admin channel it
sends SIGTERM to all its running processes and waits 1 minute them to stop. Any
process still standing after 1 minute is than killed via SIGKILL.
In addition to stop request, an agent should support a quiesce request (through
an admin channel). When such request is received an agent should send SIGTERM
to all its running processes but should not send SIGKILL to allow each process
to finish its tasks and exit when done. An agent should not start a timer after
sending the SIGTERM.
In an event that a process does not exit, a sys admin can send a stop request
to an agent to force termination.
In addition to changes in an agent, modifications are also needed in the RM,
perhaps OR, CLI and scripts.
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