[HDFS-16629] [JDK 11] Fix javadoc warnings in hadoop-hdfs module

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.4.0, 3.3.5
• Fix Version/s: 3.4.0, 3.3.5
• Component/s: hdfs
• Labels: pull-request-available
• Assignee: Shilun Fan
• Reporter: Shilun Fan
• Created: 10/Jun/22 00:07
• Updated: 17/Jun/22 12:50
• Resolved: 17/Jun/22 12:49

Description

During compilation of the most recently committed code, a java doc waring appeared and I will fix it.

1 error
100 warnings
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  37.132 s
[INFO] Finished at: 2022-06-09T17:07:12Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:javadoc-no-fork (default-cli) on project hadoop-hdfs: An error has occurred in Javadoc report generation: 
[ERROR] Exit code: 1 - javadoc: warning - You have specified the HTML version as HTML 4.01 by using the -html4 option.
[ERROR] The default is currently HTML5 and the support for HTML 4.01 will be removed
[ERROR] in a future release. To suppress this warning, please ensure that any HTML constructs 

Issue Links

• is a child of: HADOOP-16795 Java 11 compile support
• is fixed by: HDFS-16635 Fix javadoc error in Java 11
• relates to: HADOOP-18241 Move to Java 11
• links to: GitHub Pull Request #4423