[SPARK-3359] `sbt/sbt unidoc` doesn't work with Java 8

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.0
• Fix Version/s: 2.1.0
• Component/s: Documentation
• Assignee: Hyukjin Kwon
• Reporter: Xiangrui Meng
• Created: 03/Sep/14 01:04
• Updated: 12/Dec/22 18:10
• Resolved: 29/Nov/16 09:42

Description

It seems that Java 8 is stricter on JavaDoc. I got many error messages like

[error] /Users/meng/src/spark-mengxr/core/target/java/org/apache/hadoop/mapred/SparkHadoopMapRedUtil.java:2: error: modifier private not allowed here
[error] private abstract interface SparkHadoopMapRedUtil {
[error]                  ^

This is minor because we can always use Java 6/7 to generate the doc.

Issue Links

• duplicates: SPARK-12047 Unhelpful error messages generated by JavaDoc while doing sbt unidoc
• relates to: SPARK-18692 Test Java 8 unidoc build on Jenkins master builder
• links to: [Github] Pull Request #2909 (srowen)
• links to: [Github] Pull Request #4193 (srowen)
• links to: [Github] Pull Request #14221 (srowen)
• links to: [Github] Pull Request #15939 (HyukjinKwon)
• links to: [Github] Pull Request #15999 (HyukjinKwon)
• links to: [Github] Pull Request #16013 (HyukjinKwon)
• links to: [Github] Pull Request #16201 (michalsenkyr)