Github user felixcheung commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/710#issuecomment-184963957
another download error
https://s3.amazonaws.com/archive.travis-ci.org/jobs/109754384/log.txt:
```
SPARK_HOME is
/home/travis/build/apache/incubator-zeppelin/spark-1.3.1-bin-hadoop2.3
tar (child): spark-1.3.1-bin-hadoop2.3.tgz: Cannot open: No such file or
directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now
```
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