brumi1024 opened a new pull request, #7631:
URL: https://github.com/apache/hadoop/pull/7631
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### Description of PR
The fallback ordering between cgroup v2 and v1 handlers are now changed, so
that now if cgroup v2 is enabled it'll be used first, and if the controller is
not mounted in v2 YARN will try to search for it in a v1 hierarchy. This needed
some adjustments in the init procedure of the v2 handlers when preconfigured
mount paths are used, but the end result should be similar.
### How was this patch tested?
Deployed to a cluster, and tested cgroup v1/v2 functionality, by
specifically recreating the error scenario described in the ticket.
### For code changes:
- [ ] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
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