Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/916#discussion_r13209614
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -379,8 +379,17 @@ abstract class RDD[T: ClassTag](
}.toArray
}
- def takeSample(withReplacement: Boolean, num: Int, seed: Long =
Utils.random.nextLong): Array[T] =
- {
+ /**
+ * Return a fixed-size sampled subset of this RDD in an array
+ *
+ * @param withReplacement whether sampling is done with replacement
+ * @param num size of the returned sample
+ * @param seed seed for the random number generator
+ * @return sample of specified size in an array
+ */
+ def takeSample(withReplacement: Boolean,
+ num: Int,
--- End diff --
use 4-space indentation
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