Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/2818
For whatever interpreter setting, user can set it via %conf.
When `zeppelin.livy.restart_dead_session` is turned on. dead livy session
will be restarted automatically.
When it is turned off, proper message will be displayed in frontend, user
can restart livy interpreter by himself after seeing this message.
---
