Github user echarles commented on the issue: https://github.com/apache/zeppelin/pull/2637 Feedback/Question on latest commit: + For `cluster` mode, I sometimes receive a null pointer at first run, running a second time directly after is fine. + Are you enforcing the executor pod name? + Additional dep for cluster mode works with `%spark.dep`, but not via the Spark interpreter setting UI (see screnshot) ![screenshot from 2018-01-07 13-05-54](https://user-images.githubusercontent.com/226720/34670180-7f73989e-f475-11e7-9189-bb51be62341a.png)
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