GitHub user khalidhuseynov opened a pull request:
https://github.com/apache/zeppelin/pull/3084
[zeppelin-3639] Add Ipython interpreter prerequisite check for protobuf
### What is this PR for?
This is to protobuf prerequisite check when starting ipython kernel. This
is required since from grpcio 1.12.0 it's independent from protobuf
### What type of PR is it?
[ Improvement ]
### Todos
* [x] - add protobuf prerequisite check
* [x] - add to ipython docs
### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-3639
### How should this be tested?
1. remove grpcio and protobuf
2. install latest grpcio and try to run ipython interpreter - should fail
3. then install protobuf and try again - should work
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need update?
* Is there breaking changes for older versions?
* Does this needs documentation?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/khalidhuseynov/zeppelin fix/ZEPPELIN-3639
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/3084.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3084
commit 58c06898b7d78790f153dfea9912acf1d837a5c8
Author: Khalid Huseynov
Date: 2018-07-19T06:47:53Z
add protobuf prerequsite check
commit 066e061d25d0066102818eb57a97840cece77ad5
Author: Khalid Huseynov
Date: 2018-07-19T07:03:58Z
fix ipython documentation
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