[HADOOP-17091] [JDK11] Fix Javadoc errors

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.4.0
• Component/s: build

Environment

Java 11

Release Note

<!-- markdown -->
* Upgraded to Yetus master to change javadoc goals.
* Changed javadoc goals from `javadoc:javadoc` to `process-sources javadoc:javadoc-no-fork`.
* Javadoc with JDK11 fails in some modules. Ignored them for now and we will fix them later.

• Assignee: Akira Ajisaka
• Reporter: Uma Maheswara Rao G
• Created: 20/Jun/20 06:17
• Updated: 24/Nov/20 09:03
• Resolved: 03/Aug/20 01:52

Description

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  17.982 s
[INFO] Finished at: 2020-06-20T01:56:28Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:javadoc (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
[ERROR] in your comments are valid in HTML5, and remove the -html4 option.
[ERROR] /home/jenkins/jenkins-slave/workspace/hadoop-multibranch_PR-2084/src/hadoop-hdfs-project/hadoop-hdfs/target/generated-sources/java/org/apache/hadoop/hdfs/server/namenode/FsImageProto.java:25197: error: cannot find symbol
[ERROR]       com.google.protobuf.GeneratedMessageV3 implements
[ERROR]                          ^
[ERROR]   symbol:   class GeneratedMessageV3
[ERROR]   location: package com.google.protobuf
[ERROR] /home/jenkins/jenkins-slave/workspace/hadoop-multibranch_PR-2084/src/hadoop-hdfs-project/hadoop-hdfs/target/generated-sources/java/org/apache/hadoop/hdfs/server/namenode/FsImageProto.java:25319: error: cannot find symbol
[ERROR]         com.google.protobuf.GeneratedMessageV3 implements
[ERROR]                            ^
[ERROR]   symbol:   class GeneratedMessageV3
[ERROR]   location: package com.google.protobuf
[ERROR] /home/jenkins/jenkins-slave/workspace/hadoop-multibranch_PR-2084/src/hadoop-hdfs-project/hadoop-hdfs/target/generated-sources/java/org/apache/hadoop/hdfs/server/namenode/FsImageProto.java:26068: error: cannot find symbol
[ERROR]         com.google.protobuf.GeneratedMessageV3 implements
[ERROR]                            ^
[ERROR]   symbol:   class GeneratedMessageV3
[ERROR]   location: package com.google.protobuf
[ERROR] /home/jenkins/jenkins-slave/workspace/hadoop-multibranch_PR-2084/src/hadoop-hdfs-project/hadoop-hdfs/target/generated-sources/java/org/apache/hadoop/hdfs/server/namenode/FsImageProto.java:26073: error: package com.google.protobuf.GeneratedMessageV3 does not exist
[ERROR]       private PersistToken(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {

Issue Links

• duplicates: HADOOP-16862 [JDK11] Support JavaDoc
• is broken by: HADOOP-16596 [pb-upgrade] Use shaded protobuf classes from hadoop-thirdparty dependency
• is broken by: HADOOP-16888 [JDK11] Support JDK11 in the precommit job
• is related to: HADOOP-16862 [JDK11] Support JavaDoc
• is related to: HADOOP-17179 [JDK 11] Fix javadoc error in Java API link detection
• is related to: HADOOP-17394 [JDK 11] mvn package -Pdocs fails
• is related to: HADOOP-17297 Use Yetus before YETUS-994 to enable adding comments to GitHub
• requires: YETUS-972 Make javadoc phase and goal configurable in maven.sh