Github user echarles commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/702#issuecomment-182617569
Travis fails with
```
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.471 sec
<<< FAILURE! - in org.apache.zeppelin.spark.SparkRInterpreterTest
testSuccess(org.apache.zeppelin.spark.SparkRInterpreterTest) Time elapsed:
0.496 sec <<< ERROR!
java.lang.ExceptionInInitializerError: null
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:186)
at java.lang.ProcessImpl.start(ProcessImpl.java:130)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1028)
at
scala.sys.process.ProcessBuilderImpl$Simple.run(ProcessBuilderImpl.scala:68)
at org.ddahl.rscala.callback.RClient$.apply(RClient.scala:689)
at org.ddahl.rscala.callback.RClient$.apply(RClient.scala:672)
at org.apache.zeppelin.spark.ZeppelinR$.<init>(ZeppelinR.scala:40)
at org.apache.zeppelin.spark.ZeppelinR$.<clinit>(ZeppelinR.scala)
at org.apache.zeppelin.spark.ZeppelinR.css(ZeppelinR.scala)
at
org.apache.zeppelin.spark.SparkRInterpreter.format(SparkRInterpreter.java:179)
at
org.apache.zeppelin.spark.SparkRInterpreter.interpret(SparkRInterpreter.java:134)
at
org.apache.zeppelin.spark.SparkRInterpreterTest.testSuccess(SparkRInterpreterTest.java:83)
```
Strangely, it was able to pass at least one time 2 days ago.
I will double check on a platform that does not have R and mock more if
needed.
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