Github user namanmishra91 commented on the issue:
https://github.com/apache/zeppelin/pull/2619
@zjffdu
> What we need to do it to run it blocking way.
The code does exactly that. It might look complicated overall as a lot of
code is related to handling and passing of sequential run state to UI. For
backend changes, please check `runAllParagraphsSequentially()` in
`NotebookServer.java`.
In a gist, sequential run is ultimately performed by
`SequentialNoteRunner.java` which basically runs a paragraph, blocks until it
is complete and then submits the next one. If it helps, I can divide this into
2 PRs : one for backend only changes and another for integration with frontend.
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