[jira] [Created] (NUTCH-2972) Javadoc build fails using JDK 17

["Sebastian Nagel (Jira)" <ji...@apache.org>]

Sebastian Nagel created NUTCH-2972:
--------------------------------------

             Summary: Javadoc build fails using JDK 17
                 Key: NUTCH-2972
                 URL: https://issues.apache.org/jira/browse/NUTCH-2972
             Project: Nutch
          Issue Type: Sub-task
          Components: build, documentation
    Affects Versions: 1.20
            Reporter: Sebastian Nagel
             Fix For: 1.20


Creating the Javadocs fails using JDK 17:
{noformat}
$> 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
{noformat}

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



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