Github user bzz commented on the issue:
https://github.com/apache/zeppelin/pull/1263
CI failure
```
Results :
Failed tests:
ZeppelinSparkClusterTest.sparkRTest:116 expected:<[[1] 3]> but
was:<[<pre><code>Error in getSparkSession(): SparkSession not initialized
</code></pre>
<pre><code>Error in (function (classes, fdef, mtable) : unable to find an
inherited method for function 'count' for signature '"function"'
</code></pre>]>
Tests run: 65, Failures: 1, Errors: 0, Skipped: 0
````
Fixed in #1259 so rebasing again
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