Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/2750
@felixcheung I revert the changes about spark 2.1.0 -> spark 2.1.2 and
spark 2.2.0 -> spark 2.2.1, since this PR is only for supporting spark 2.3, I
don't want to other things to block this and 0.8.0 release. Will do the
download url change in another PR ---
