Hi all, I have a table named test like this:
| a | b | | 1 | null | | 2 | null | After upgraded the cluster from spark 1.3.1 to 1.4.0, I found the Sum function in spark 1.4 and 1.3 are different. The SQL is: select sum(b) from test In Spark 1.4.0 the result is 0.0, in spark 1.3.1 the result is null. I think the result should be null, why the result is 0.0 in 1.4.0 but not null? Is this a bug? Any hint is appreciated. -- View this message in context: http://apache-spark-developers-list.1001551.n3.nabble.com/SparkSQL-1-4-0-The-result-of-SUM-xxx-in-SparkSQL-is-0-0-but-not-null-when-the-column-xxx-is-all-null-tp13008.html Sent from the Apache Spark Developers List mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org For additional commands, e-mail: dev-h...@spark.apache.org
