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https://issues.apache.org/jira/browse/HADOOP-19932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18094026#comment-18094026
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ASF GitHub Bot commented on HADOOP-19932:
-----------------------------------------

steveloughran opened a new pull request, #8585:
URL: https://github.com/apache/hadoop/pull/8585

   
   Cull
   
   - JavaComparator
   - JavaSerialization
   - DeserializerComparator
   
   ### How was this patch tested?
   
   Updated tests
   
   ### For code changes:
   
   - [X] 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:
   
   - [ ] 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




> Prune obsolete classes in org.apache.hadoop.io.serializer
> ---------------------------------------------------------
>
>                 Key: HADOOP-19932
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19932
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 3.5.1, 3.6.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>
> There's a collection of classes in org.apache.hadoop.io.serializer which try 
> to bridge between Writable and Serializable.
> None of this code has been touched for a decade and may not be used; get rid 
> of the cruft.
> Although tagged LimitedPrivate MapReduce, it may get used downstream in 
> places like spark; which may notice if cut.
> so prune carefully.



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