Running Zeppelin’s install-interpreter.sh script stopped working;
Zeppelin downloads the Maven artifacts from the Maven central repository (http://repo1.maven.org/maven2) which has stopped supporting HTTP protocol (only HTTPS).
A fix was applied to master branch and it is included in 15.2.0-m7 milestone.
If you have old version, you can add the following to your insightedge-env.sh script:
build was failing