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https://issues.apache.org/jira/browse/MAPREDUCE-7487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17879090#comment-17879090
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LoggingResearch commented on MAPREDUCE-7487:
--------------------------------------------
To make it clear on how to fix the issue, we upload the comparison between the
original version and the log-enhanced version in the attached file
`original-vs-log-enhanced.md`. The log-enhanced version is generated
automatically utilizing our proposed tool.
> Missing System Output for Misconfiguration in KeyFieldBasedPartitioner
> Settings
> -------------------------------------------------------------------------------
>
> Key: MAPREDUCE-7487
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7487
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mapreduce-client
> Affects Versions: 3.3.6
> Environment: Version: {{`3.3.6`}}
> Location:
> {{{}hadoop/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/KeyFieldBasedPartitioner.java{}}}，
> in {{`setConf`}} method, from Line 76 - 77.
> Reporter: LoggingResearch
> Priority: Major
> Attachments: KeyFieldBasedPartitionerTest.java,
> original-vs-log-enhanced.md
>
>
> To effectively use {{{}KeyFieldBasedPartitioner{}}}, users can optionally set
> the {{mapreduce.partition.keypartitioner.options}} configuration parameter to
> define partitioning behavior. However, this parameter is not documented in
> {{{}mapreduce-default.xml{}}}, leaving users without guidance on how to
> properly configure it. This omission hinders users from fully leveraging the
> system’s configurability.
>
> *Expected Behavior:*
> The system should provide warnings or informative logs to guide users in case
> of misconfiguration. Relying solely on users to carefully read through the
> configuration documentation is insufficient, particularly when the necessary
> details are not included in the documentation.
>
> *How-to-Fix:*
> To improve user experience, we suggest enhancing the system with additional
> logging to expose these configurations and their correct usage.
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