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From "Haopu Wang" <HW...@qilinsoft.com>
Subject Can I call aggregate UDF in DataFrame?
Date Thu, 26 Mar 2015 07:37:17 GMT
Specifically there are only 5 aggregate functions in class
org.apache.spark.sql.GroupedData: sum/max/min/mean/count.

Can I plugin a function to calculate stddev?

Thank you!


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