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Ship it!




Excellent description thanks! I will add this in to the code as well for 
posterity.

- Benjamin Mahler


On May 16, 2024, 11:45 p.m., Jason Zhou wrote:
> 
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> https://reviews.apache.org/r/74995/
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> (Updated May 16, 2024, 11:45 p.m.)
> 
> 
> Review request for mesos and Benjamin Mahler.
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Based on this ticket (https://issues.apache.org/jira/browse/MESOS-9305)
> and the ROOT_CGROUPS_CreateRecursively test in CgroupsIsolatorTest,
> there seems to be a possibility that the root folder may be deleted and
> new cgroups cannot be properly created.
> 
> In v1, this was addressed by enabling recursively creating the groups.
> 
> In v2, since we make use of cgroup.subtree_control to determine a cgroup
> and its descendents' access to controllers, we cannot recover this effectively
> if the root folder is deleted, so we cant just recursively create the folders.
> 
> Hence, we elected to crash if the root folder is not found, as it will allow
> us to restart and go through the logic that takes care of setting all the
> values inside cgroup.subtree_control again.
> 
> 
> Diffs
> -----
> 
>   src/slave/containerizer/mesos/isolators/cgroups2/cgroups2.cpp 
> 6fce8c984e4dd85a694453a778c9a32f707bde9f 
> 
> 
> Diff: https://reviews.apache.org/r/74995/diff/1/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Jason Zhou
> 
>

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