Github user smartnut007 commented on a diff in the pull request:
https://github.com/apache/spark/pull/462#discussion_r11816224
--- Diff: core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala ---
@@ -466,6 +466,12 @@ class RDDSuite extends FunSuite with
SharedSparkContext {
test("takeSample") {
val data = sc.parallelize(1 to 100, 2)
+ for (num <- List(5,20,100)) {
+ val sample = data.takeSample(withReplacement=false, num=num)
--- End diff --
@advancedxy java.util.Random the default seed is a function of
System.nanoTime ( at least in the openjdk code ). In python its based on
time.time(). python time.time() is at the millisecond precision. Not sure if
there is a python method to get nanoTime.
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