kafka_2.8.0-0.8.0 jar in maven repository is empty?

$ curl -L http://repo.maven.apache.org/maven2/org/apache/kafka/kafka_2.8.0/0.8.0/kafka_2.8.0-0.8.0.jar

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 5189 100 5189 0 0 12631 0 --:--:-- --:--:-- --:--:-- 158k

$ ls -lh
-rw-rw-r-- 1 carllerche staff 5.1K Feb 7 11:41 kafka_2.8.0-0.8.0.jar

$ jar tf kafka_2.8.0-0.8.0.jar
META-INF/MANIFEST.MF
LICENSE
NOTICE