[NUTCH-2972] Javadoc build fails using JDK 17

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.20
• Fix Version/s: 1.20
• Component/s: build, documentation
• Labels: help-wanted
• Assignee: Sebastian Nagel
• Reporter: Sebastian Nagel
• Created: 11/Sep/22 10:29
• Updated: 13/Mar/24 14:50
• Resolved: 06/Mar/23 10:46

Description

Creating the Javadocs fails using JDK 17:

$> JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64 ant javadoc
...
  [javadoc] /home/wastl/data0/proj/crawler/nutch/git/trunk/src/java/org/apache/nutch/segment/SegmentMerger.java:79: error: heading used out of sequence: <H3>, compared to implicit preceding heading: <H1>
  [javadoc]  * <h3>Important Notes</h3> <h4>Which parts are merged?</h4>
...
  [javadoc] 3 errors
  [javadoc] 100 warnings

All 3 errors must be fixed, would be good also to address the warnings.

Issue Links

• links to: GitHub Pull Request #760