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https://issues.apache.org/jira/browse/MAPREDUCE-7488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17879091#comment-17879091
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LoggingResearch commented on MAPREDUCE-7488:
--------------------------------------------
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 Local Mode Settings
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-7488
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7488
> 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-common/src/main/java/org/apache/hadoop/mapred/LocalClientProtocolProvider.java`{}}}，
> in {{`create`}} method, from Line 37 - 39.
> Reporter: LoggingResearch
> Priority: Major
> Attachments: LocalClientProtocolProviderTest.java,
> original-vs-log-enhanced.md
>
>
> Enabling {{local mode}} in {{mapreduce}} requires setting the
> {{mapreduce.framework.name}} configuration parameter to {{{}local{}}}.
> However, users who are unfamiliar with configuration parameters may struggle
> to do this correctly. The system currently lacks runtime output indicating
> whether this configuration has taken effect, leading to confusion and a
> higher likelihood of misconfiguration.
>
> *Expected Behavior:*
> If the system fails to activate the {{LocalJobRunner}} because the
> {{mapreduce.framework.name}} parameter is not set to {{{}local{}}}, a warning
> should be output to notify the user.
>
> *How-to-Fix:*
> We propose enhancing system observability and diagnosability by adding
> logging.
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