[SPARK-4417] New API: sample RDD to fixed number of items #3723

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ilganeli wants to merge 6 commits intoapache:masterfrom

ilganeli:SPARK-4417B

Commits on Dec 10, 2014

Upated RDD class to add a sampling function that provides N elements from the RDD and returns it as an RDD.
Ilya Ganelin
committed
Added testing for new sampling function.
Ilya Ganelin
committed
Fixing minor formatting problems
Ilya Ganelin
committed

Commits on Dec 17, 2014

Merge remote-tracking branch 'upstream/master' into SPARK-4417B
Ilya Ganelin
committed
Spcing
Ilya Ganelin
committed
More Spacing
Ilya Ganelin
committed