Github user gss2002 commented on the issue:
https://github.com/apache/zeppelin/pull/2886
@zjffdu here is a patch that I think will fix this issue. I will know in 7
days if the issue comes back but has plagued our 4 different environments
running Zeppelin over the last few days since it has reached max timeout. Let
me know your thoughts on this patch. Also the CI failures look to be un-related.---
