[HADOOP-17394] [JDK 11] mvn package -Pdocs fails

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.1, 3.4.0
• Component/s: build, documentation
• Labels: pull-request-available
• Assignee: Akira Ajisaka
• Reporter: Akira Ajisaka
• Created: 24/Nov/20 09:02
• Updated: 26/Nov/20 02:39
• Resolved: 26/Nov/20 02:35

Description

"mvn package -Pdocs -DskipTests -DskipShade" fails with Java 11.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:javadoc (default) on project hadoop-common: 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
[ERROR] in your comments are valid in HTML5, and remove the -html4 option.
[ERROR] /Users/aajisaka/git/hadoop/hadoop-common-project/hadoop-common/target/generated-sources/java/org/apache/hadoop/ipc/protobuf/RpcHeaderProtos.java:3467: error: cannot find symbol
[ERROR]       com.google.protobuf.GeneratedMessageV3 implements
[ERROR]                          ^
(snip)

The goal "javadoc" should be "javadoc-no-fork".

Issue Links

• relates to: HADOOP-17091 [JDK11] Fix Javadoc errors
• links to: GitHub Pull Request #2488