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https://issues.apache.org/jira/browse/HADOOP-19930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18112660#comment-18112660
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ASF GitHub Bot commented on HADOOP-19930:
-----------------------------------------
steveloughran opened a new pull request, #8728:
URL: https://github.com/apache/hadoop/pull/8728
### Description of PR
cherrypick of #8640
### For code changes:
- [ ] Does the title of this PR start 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? *Note:
Automated CI
testing doesn't cover all cases so manual testing with cloud storage
is still
required.*
- [ ] 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:
- [ ] The PR includes the phrase "Contains content generated by <tool>"
where <tool> is the name of the AI tool used.
- [ ] My use of AI contributions follows the ASF legal policy
https://www.apache.org/legal/generative-tooling.html
> ObjectWritable to take interface/superclass and check before class load
> -----------------------------------------------------------------------
>
> Key: HADOOP-19930
> URL: https://issues.apache.org/jira/browse/HADOOP-19930
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 3.5.0, 3.4.3, 3.5.1
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
> Labels: pull-request-available
>
> ObjectWritable.loadClass is used to load classes from writables, after which
> the loaded class is cast to the target interface and then instantiated.
> Validating that the loaded class is of the required type prior to
> instantiation allows for faster failing, as there's no load.
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