Jerry Cwiklik created UIMA-4878:
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Summary: UIMA-DUCC: Agent not killing a child process if it fails
to stop after SIGTERM
Key: UIMA-4878
URL: https://issues.apache.org/jira/browse/UIMA-4878
Project: UIMA
Issue Type: Bug
Reporter: Jerry Cwiklik
Assignee: Jerry Cwiklik
Fix For: 2.1.0-Ducc
Agent is not killing a process which fails to exit after SIGTERM is sent. When
kill -15 is issued, an agent immediately sets the process state to Stopped even
though the process may still be running. If a process is in Stopped state, an
agent does not start a kill timer for it which leads to a process lingering on
a node. The kill timer waits a configurable amount of time and when it pops, it
sends SIGKILL signal to a process if its still running.
Modify code to change process state to Stopped when the process actually
terminates. The agent has a handle to a process and calls its waitFor() which
blocks until the process exits.
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