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Posted to issues@mesos.apache.org by "Greg Mann (Jira)" <ji...@apache.org> on 2020/04/15 21:23:00 UTC

[jira] [Created] (MESOS-10118) Agent incorrectly handles draining when empty

Greg Mann created MESOS-10118:
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             Summary: Agent incorrectly handles draining when empty
                 Key: MESOS-10118
                 URL: https://issues.apache.org/jira/browse/MESOS-10118
             Project: Mesos
          Issue Type: Bug
          Components: agent
    Affects Versions: 1.9.0
            Reporter: Greg Mann


When the agent receives a {{DrainSlaveMessage}} and does not have any tasks or operations, it writes the {{DrainConfig}} to disk and is then implicitly stuck in a "draining" state indefinitely. For example, if an agent reregistration is triggered at such a time, the master may think the agent is operating normally and send a task to it, at which point the task will fail because the agent thinks it's draining (see this test for an example: https://reviews.apache.org/r/72364/).

If the agent receives a {{DrainSlaveMessage}} when it has no tasks or operations, it should avoid writing any {{DrainConfig}} to disk so that it immediately "transitions" into the already-drained state.



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