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https://issues.apache.org/jira/browse/HADOOP-19930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18092335#comment-18092335
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ASF GitHub Bot commented on HADOOP-19930:
-----------------------------------------

hadoop-yetus commented on PR #8569:
URL: https://github.com/apache/hadoop/pull/8569#issuecomment-4833733489

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   | +0 :ok: |  reexec  |   0m  0s |  |  Docker mode activated.  |
   | -1 :x: |  patch  |   0m 22s |  |  
https://github.com/apache/hadoop/pull/8569 does not apply to trunk. Rebase 
required? Wrong Branch? See 
https://cwiki.apache.org/confluence/display/HADOOP/How+To+Contribute for help.  
|
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8569/3/console |
   | versions | git=2.34.1 |
   | Powered by | Apache Yetus 0.14.1 https://yetus.apache.org |
   
   
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> 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
>
> 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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