Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/926#issuecomment-44753603
Hey Sean, how are you running the examples. Are you using the `run-example`
script? That script should set the master to `local[*]` if the user hasn't
specified it, which will use all cores locally. I think in some cases we might
need to update the javadocs in examples to tell users to use `run-example`.
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