Github user namanmishra91 commented on the issue:
https://github.com/apache/zeppelin/pull/2619
@zjffdu Thanks for the feedback. Directly modifying the
`persistAndExecuteSingleParagraph` method will lead to the current behaviour
getting lost completely. The reason I chose to not overwrite the existing code
flow was that there were suggestions on the JIRA that we should retain the
current (concurrent) behaviour as well. Hence, added a new code path in backend
as well as UI.---
