Github user Tagar commented on the issue: https://github.com/apache/zeppelin/pull/2802 @zjffdu I just verified this new commit and it works great. Glad to see exceptions in ipython backend are now being captured correctly. I wasn't able to actually test frame size problem, as it's hard to reproduce. As @ejona86 said today in https://github.com/grpc/grpc-java/issues/4086#issuecomment-367053465 > Note that something else is broken if you're seeing that error. You should not be receiving a frame that large. (Chances are it's not actually a frame length and we're seeing garbage.) So I think that frame size error might be caused by some other problem. But it's great we can make frame size configurable now.
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