Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/693#issuecomment-42643489
Yes, maybe someone can double-check me, but I imagine it is meant to show
using just `sbt`. There is no `sbt/` directory created in this sample to begin
with, and the script doesn't seem set up to be used elsewhere for the reason
you give. Maybe change your PR to instead suggest the doc change?
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