Github user felixcheung commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/701#issuecomment-183168355
Again, failing with download - see #710
```
SPARK_HOME is
/home/travis/build/apache/incubator-zeppelin/spark-1.5.2-bin-hadoop2.3
No output has been received in the last 10 minutes, this potentially
indicates a stalled build or something wrong with the build itself.
```
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