Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/926#issuecomment-44713032
If you really want to keep the tests working outside of spark-submit, I'd
suggest using the SparkContext(SparkConf) constructor instead, and using
SparkConf.setIfMissing() to set "spark.master".
Given that bin/run-example uses spark-submit, I'm not sure we should bother
though.
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