[jira] [Created] (UIMA-4878) UIMA-DUCC: Agent not killing a child process if it fails to stop after SIGTERM

["Jerry Cwiklik (JIRA)" <de...@uima.apache.org>]

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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