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https://issues.apache.org/jira/browse/YARN-11765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17931848#comment-17931848
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ASF GitHub Bot commented on YARN-11765:
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yangjiandan commented on PR #7352:
URL: https://github.com/apache/hadoop/pull/7352#issuecomment-2693069885
HADOOP-19447 relies on the refactoring introduced by this patch, and
HADOOP-19447 is essential to unlocking further improvements in scheduling
performance, particularly in large-scale cluster environments.
@slfan1989 Could you kindly merge this PR within this week？ This would
allow me to start working on HADOOP-19447 without further delays.
> Refactor: Move Clock Class from hadoop-mapreduce-project to
> hadoop-common-project for Reusability
> -------------------------------------------------------------------------------------------------
>
> Key: YARN-11765
> URL: https://issues.apache.org/jira/browse/YARN-11765
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn, yarn-common
> Reporter: Jiandan Yang
> Assignee: Jiandan Yang
> Priority: Major
> Labels: pull-request-available
>
> *Background:*
>
> Currently, both hadoop-mapreduce-project and hadoop-yarn-project define their
> own versions of the Clock class. This leads to redundant class definitions
> across different Hadoop subprojects, reducing maintainability and code
> reusability.
>
> To {*}avoid duplicate definitions and improve class reuse{*}, we propose
> *moving the* Clock *class from* hadoop-mapreduce-project *to*
> hadoop-common-project, making it available as a shared utility for all Hadoop
> components.
>
> *Proposal:*
> 1.{*}Move the{*} Clock *interface and its implementions from*
> hadoop-mapreduce-project *to* hadoop-common-project, ensuring it becomes a
> shared utility accessible to all subprojects.
> 2. *Update all references* in hadoop-mapreduce-project and
> hadoop-yarn-project to use the newly relocated Clock class in
> hadoop-common-project.
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