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How does the Livy server for Zeppelin communicate with the Spark server?

New Contributor

Does it act like a Spark client and communicate over the normal Spark port numbers or is it all REST?

Which ports need to be opened in the firewall in the following flow?

Zeppelin <-> Livy Client <-> Livy Server <-> |-Firewall-| <-> Spark Cluster

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Expert Contributor
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Super Guru

Hi @Michael Gregory

Livy is a Rest server that acts as a Spark client. So you need to open nothing more than normal spark ports, listed here.

I would very highly recommend going over slide 14-31 on this link. These are just images so it should be easy and simple to go over this but it will give you a better understanding of Livy and will give you confidence in what you are trying to do.

Expert Contributor

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