[SPARK-13674][SQL] Add wholestage codegen support to Sample#11517

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viirya wants to merge 16 commits intoapache:masterfrom

viirya:add-wholestage-sample

Commits on Mar 4, 2016

Init import for adding wholestage codegen support to Sample.
viirya
committed

Commits on Mar 7, 2016

Commits on Mar 9, 2016

Merge remote-tracking branch 'upstream/master' into add-wholestage-sample
viirya
committed
Merge remote-tracking branch 'upstream/master' into add-wholestage-sample
viirya
committed
Use new RandomSampler API to do wholestage codegen of Sampler.
viirya
committed

Commits on Mar 21, 2016

Commits on Mar 29, 2016

Merge remote-tracking branch 'upstream/master' into add-wholestage-sample
viirya
committed

Commits on Mar 31, 2016