Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/13403#discussion_r67904001
--- Diff: core/src/main/scala/org/apache/spark/rdd/DoubleRDDFunctions.scala
---
@@ -47,12 +47,12 @@ class DoubleRDDFunctions(self: RDD[Double]) extends
Logging with Serializable {
stats().mean
}
- /** Compute the variance of this RDD's elements. */
+ /** Compute the population variance of this RDD's elements. */
def variance(): Double = self.withScope {
stats().variance
}
- /** Compute the standard deviation of this RDD's elements. */
+ /** Compute the population standard deviation of this RDD's elements. */
def stdev(): Double = self.withScope {
--- End diff --
Oh, for this, I want to keep the current code for code consistency since
all other functions `variance/mean/sampleDev/...` has the same code,
`self.withScope { stats().~~~ }`.
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