Github user keypointt commented on the pull request:
https://github.com/apache/spark/pull/11108#issuecomment-199567084
Oh yes I just tried 2.10 and 2.11, where 2.11 build succeeded but 2.10
failed.
Should I just explicitly add val seed?
// specify the exact fraction desired from each key
val fractions = Map(1 -> 0.1, 2 -> 0.6, 3 -> 0.3)
val seed = Utils.random.nextLong
// Get an approximate sample from each stratum
val approxSample = data.sampleByKey(withReplacement = false, fractions,
seed)
// Get an exact sample from each stratum
val exactSample = data.sampleByKeyExact(withReplacement = false,
fractions, seed)
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