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  1. Mesos
  2. MESOS-1871

Sending SIGTERM to a task command may render it orphaned

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Details

    • Bug
    • Status: Open
    • Minor
    • Resolution: Unresolved
    • None
    • None
    • agent
    • None

    Description

      CommandExecutor launches tasks wrapping them into sh -c. That means signals are sent to the top process—that is sh -c—and not to the task directly. Though SIGTERM is propagated by sh -c down the process tree, if the task is unresponsive to SIGTERM, sh -c terminates reporting success to the CommandExecutor, rendering the task detached from the parent process and still running. Because the CommandExecutor thinks the command terminated normally, its OS process exits normally and may not trigger containerizer's escalation which destroys cgroups.

      Here is the test related to the first part: https://gist.github.com/rukletsov/68259dfb02421813f9e6.
      Here is the test related to the second part: https://gist.github.com/rukletsov/3f19ecc7389fa51e65c0.

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              Unassigned Unassigned
              alexr Alex R
              Ian Downes Ian Downes
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                Created:
                Updated: