GitHub user NicolasRouquette opened a pull request:
https://github.com/apache/zeppelin/pull/3215
[ZEPPELIN-3167]
### What is this PR for?
Split the R assignment in two steps, evaluation and assignment,
such that the tryCatch in the R eval loop can detect errors
and report them to Zeppelin.
### What type of PR is it?
[Bug Fix]
### Todos
* [ ] - Task
### What is the Jira issue?
* Open an issue on Jira https://issues.apache.org/jira/browse/ZEPPELIN/
* https://issues.apache.org/jira/browse/ZEPPELIN-3167
### How should this be tested?
* First time? Setup Travis CI as described on
https://zeppelin.apache.org/contribution/contributions.html#continuous-integration
* Strongly recommended: add automated unit tests for any new or changed
behavior
* Outline any manual steps to test the PR here.
### 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/NicolasRouquette/zeppelin 0.8-ZEPPELIN-3167
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/3215.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 #3215
----
commit 7988fad6d0ec9f63adcf25b315876e9436e49e78
Author: Nicolas F Rouquette <nicolas.f.rouquette@...>
Date: 2018-11-03T18:19:35Z
Split the assignment into two steps, evaluation and assignment, such that
the tryCatch in the eval loop can detect and report errors back to Zeppelin
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