ryukobayashi opened a new pull request, #8506:
URL: https://github.com/apache/hadoop/pull/8506
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### Description of PR
Resource.castToIntSafely() only guarded against positive overflow (clamping
values > Integer.MAX_VALUE to Integer.MAX_VALUE), but passed negative values
through unchanged. The method's Javadoc stated "This method assumes resource
value is positive", however YARN RM can transiently return negative available
resources (e.g. due to overload or node failures), violating this assumption.
This patch adds a guard that clamps values below 0 to 0, consistent with the
existing upper-bound clamping behavior.
### How was this patch tested?
Existing unit tests in TestResource pass.
### 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?
### AI Tooling
If an AI tool was used:
- [x] The PR includes the phrase "Contains content generated by Claude
(Anthropic)"
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