Qian Zhang created MESOS-9695:
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Summary: Remove the duplicate pid check in Docker containerizer
Key: MESOS-9695
URL: https://issues.apache.org/jira/browse/MESOS-9695
Project: Mesos
Issue Type: Improvement
Components: containerization
Reporter: Qian Zhang
In `DockerContainerizerProcess::_recover`, we check if there are two executors
use duplicate pid, and error out if we find duplicate pid (see
[here|[https://github.com/apache/mesos/blob/1.7.2/src/slave/containerizer/docker.cpp#L1068:L1078]]
for details). However I do not see the value this check can give us but it
will cause serious issue (agent crash loop when restarting) in rare case (a new
executor reuse pid of an old executor), so I think we'd better to remove it
from Docker containerizer.
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