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https://issues.apache.org/jira/browse/MESOS-9541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16766699#comment-16766699
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Greg Mann commented on MESOS-9541:
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After discussing this with some other committers, I think we're going to punt
on it for the time being. It would be misleading to send an operation update to
a framework when these agents are removed, since subsequent reconciliation
would return OPERATION_UNKNOWN since the agents are not transitioned into a
well-defined state in this case, they simply disappear.
We can provide a proper solution for this once MESOS-9556 is resolved. Marking
that ticket as blocking this one.
> Transition agent operations to some "lost" state when the agent is removed.
> ---------------------------------------------------------------------------
>
> Key: MESOS-9541
> URL: https://issues.apache.org/jira/browse/MESOS-9541
> Project: Mesos
> Issue Type: Improvement
> Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.7.0, 1.7.1
> Reporter: Chun-Hung Hsiao
> Assignee: Greg Mann
> Priority: Major
> Labels: foundations, mesosphere
>
> MESOS-8782 and MESOS-8783 transition operations to
> {{OPERATION_GONE_BY_OPERATOR}} or {{OPERATION_UNREACHABLE}} when their agents
> are marked as gone or unreachable respectively. However, there are other
> cases where agents can be "removed" and forgot by the master:
> 1) When an agent tries to register with a new ID from the same IP:
> https://github.com/apache/mesos/blob/f130544bdb8a9849096ee2cb35ebcbc7d8a326d8/src/master/master.cpp#L6836-L6849
> 2) When an agent requests to unregister:
> https://github.com/apache/mesos/blob/f130544bdb8a9849096ee2cb35ebcbc7d8a326d8/src/master/master.cpp#L7817-L7840
> In these tasks, the master explicitly sends {{TASK_LOST}} for task status
> updates (this also means that [this
> documentation|https://github.com/apache/mesos/blob/f130544bdb8a9849096ee2cb35ebcbc7d8a326d8/include/mesos/mesos.proto#L2287-L2288]
> is wrong), but does nothing for operations. We should design proper
> operation status transitions for these cases.
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