5051262d4c
We added a bunch of higher order statistics such as skewness and kurtosis to GroupedData. I don't think they are common enough to justify being listed, since users can always use the normal statistics aggregate functions. That is to say, after this change, we won't support ```scala df.groupBy("key").kurtosis("colA", "colB") ``` However, we will still support ```scala df.groupBy("key").agg(kurtosis(col("colA")), kurtosis(col("colB"))) ``` Author: Reynold Xin <rxin@databricks.com> Closes #9446 from rxin/SPARK-11489. |
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