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https://issues.apache.org/jira/browse/HADOOP-11377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14388031#comment-14388031
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Li Lu commented on HADOOP-11377:
--------------------------------
I did some investigation and I think I know the direct cause of the {{javadoc:
error - Illegal package name: ""}} now. It looks like the jdiff.compatibility
is set to empty at the very beginning of hadoop-project-dist/pom.xml, which may
cause ant to pass that empyt line as "". Javadoc may understand that as a
package name. After I comment that line out the error disappeared.
> jdiff failing on java 7 and java 8, "Null.java" not found
> ---------------------------------------------------------
>
> Key: HADOOP-11377
> URL: https://issues.apache.org/jira/browse/HADOOP-11377
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: build
> Affects Versions: 2.6.0, 2.7.0
> Environment: Java8 jenkins
> Reporter: Steve Loughran
> Assignee: Tsuyoshi Ozawa
> Attachments: HADOOP-11377.001.patch
>
>
> Jdiff is having problems on Java 8, as it cannot find a javadoc for the new
> {{Null}} datatype
> {code}
> '<https://builds.apache.org/job/Hadoop-common-trunk-Java8/ws/hadoop-common-project/hadoop-common/dev-support/jdiff/Null.java'>
> The ' characters around the executable and arguments are
> not part of the command.
> [javadoc] javadoc: error - Illegal package name: ""
> [javadoc] javadoc: error - File not found:
> "<https://builds.apache.org/job/Hadoop-common-trunk-Java8/ws/hadoop-common-project/hadoop-common/dev-support/jdiff/Null.java";>
> {code}
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