Ted Yu created SPARK-11371:
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Summary: Make "mean" an alias for "avg" operator
Key: SPARK-11371
URL: https://issues.apache.org/jira/browse/SPARK-11371
Project: Spark
Issue Type: Improvement
Reporter: Ted Yu
Priority: Minor
>From Reynold in the thread 'Exception when using some aggregate operators'
>(http://search-hadoop.com/m/q3RTt0xFr22nXB4/):
I don't think these are bugs. The SQL standard for average is "avg", not
"mean". Similarly, a distinct count is supposed to be written as
"count(distinct col)", not "countDistinct(col)".
We can, however, make "mean" an alias for "avg" to improve compatibility
between DataFrame and SQL.
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