Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/2619
@namanmishra91 Thanks for the contribution. But the implementation is a
little complicated to me. I think the easiest implementation is just run
paragraphs sequentially in backend. Look at the following code.
https://github.com/apache/zeppelin/blob/master/zeppelin-server/src/main/java/org/apache/zeppelin/socket/NotebookServer.java#L1681
`persistAndExecuteSingleParagraph` run paragraph in non-blocking way. What
we need to do it to run it blocking way.
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