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https://issues.apache.org/jira/browse/MESOS-9672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16801146#comment-16801146
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Vinod Kone commented on MESOS-9672:
-----------------------------------
I guess we would still need this incase the pid re-use happens even without an
agent reboot (highly unlikely but technically possible).
> Docker containerizer should ignore pids of executors that do not pass the
> connection check.
> -------------------------------------------------------------------------------------------
>
> Key: MESOS-9672
> URL: https://issues.apache.org/jira/browse/MESOS-9672
> Project: Mesos
> Issue Type: Bug
> Components: containerization
> Reporter: Meng Zhu
> Priority: Major
> Labels: containerization
>
> When recovering executors with a tracked pid we first try to establish a
> connection to its libprocess address to avoid reaping an irrelevant process:
> https://github.com/apache/mesos/blob/4580834471fb3bc0b95e2b96e04a63d34faef724/src/slave/containerizer/docker.cpp#L1019-L1054
> If the connection fails to establish, we should not track its pid:
> https://github.com/apache/mesos/blob/4580834471fb3bc0b95e2b96e04a63d34faef724/src/slave/containerizer/docker.cpp#L1071
> One trouble this might cause is that if the pid is being used by another
> executor, this could lead to duplicate pid error and lead the agent into a
> crash loop:
> https://github.com/apache/mesos/blob/4580834471fb3bc0b95e2b96e04a63d34faef724/src/slave/containerizer/docker.cpp#L1066-L1068
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