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https://issues.apache.org/jira/browse/HADOOP-19036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17807274#comment-17807274
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ASF GitHub Bot commented on HADOOP-19036:
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slfan1989 commented on PR #6444:
URL: https://github.com/apache/hadoop/pull/6444#issuecomment-1893890264
> any specific reason to downgrade the maven version?
@steveloughran Thank you for your message!
Downgrading Maven is not due to any issues encountered during compilation,
but rather because Maven 3.6.3 is used by other operating systems and it would
be better for us to ensure version consistency.
While preparing for the 3.4.0 release, I noticed that the dev-support
includes a variety of operating systems
such as CentOS 7, CentOS 8, Ubuntu, Debian, Windows, and more.
These operating systems have different ways of initializing Maven, as shown
in the following table:
| Operating System | Maven version | Initialization |
| -----------
> Standardize Maven Initialization Across Operating Systems
> ---------------------------------------------------------
>
> Key: HADOOP-19036
> URL: https://issues.apache.org/jira/browse/HADOOP-19036
> Project: Hadoop Common
> Issue Type: Improvement
> Components: build
> Affects Versions: 3.4.0, 3.5.0
> Reporter: Shilun Fan
> Assignee: Shilun Fan
> Priority: Major
> Labels: pull-request-available
>
> The differences in initializing Maven for various operating systems in the
> build scripts are as follows:
> - For Ubuntu and Debian, Maven is installed using the yum repository.
> - For CentOS 7 and CentOS 8, Maven is downloaded remotely.
> - The Maven version used on Windows is inconsistent with other operating
> systems.
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