Details
Description
You're publishing source JARs for Hadoop Core in your Maven Repository.
The jar itself has the usual Java layout with directories
/org/apache/hadoop/conf etc., the source jar has an additional level
of directories above that (core, hdfs, mapred) so at least IntelliJ
IDEA can't find the sources properly which makes sense considering
this layout.
So the source JAR should mirror the actual JAR