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Yin Huai commented on SPARK-8828: --------------------------------- We also need to take a look at if we need CombinSum (introduced by SPARK-5680). If not, we can also remove the change of https://issues.apache.org/jira/browse/SPARK-6451. > Revert the change of SPARK-5680 > ------------------------------- > > Key: SPARK-8828 > URL: https://issues.apache.org/jira/browse/SPARK-8828 > Project: Spark > Issue Type: Bug > Affects Versions: 1.3.1, 1.4.0 > Reporter: Yin Huai > Priority: Critical > > SPARK-5680 introduced a bug to sum function. After this change, when there is > no input to a sum function (or all input values are nulls), it returns 0.0 > instead of null, which is wrong. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org