Github user felixcheung commented on the issue:
https://github.com/apache/zeppelin/pull/2750
well... that's not my understand and other implementations are pulling from
the download script and then to the referred mirror, eg.
https://github.com/apache/spark/blob/master/build/mvn#L81
https://github.com/apache/spark/blob/master/sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveExternalCatalogVersionsSuite.scala#L64
https://github.com/apache/spark/blob/master/R/pkg/R/install.R#L213
https://github.com/apache/spark/blob/master/external/docker/spark-mesos/Dockerfile#L27
https://github.com/graphframes/graphframes/commit/a1427217a2458ae89dde038f0ce79eec7913a7d6
https://github.com/Homebrew/homebrew-core/blob/master/Formula/apache-spark.rb---
