Github user thesuperzapper commented on the issue:
https://github.com/apache/zeppelin/pull/2231
@zjffdu what version of spark were you using, as this only occurs >=2.2
It looks like we still try to call (the now removed as of Spark 2.2)
"appUIAddress":
https://github.com/apache/zeppelin/blob/master/livy/src/main/java/org/apache/zeppelin/livy/LivySparkInterpreter.java#L51
Meaning its pretty likely that this issue still occurs in master for >=2.2.
(I cant check in my environment) ---
