Marco Gaido created SPARK-28610: ----------------------------------- Summary: Support larger buffer for sum of long Key: SPARK-28610 URL: https://issues.apache.org/jira/browse/SPARK-28610 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 3.0.0 Reporter: Marco Gaido
The sum of a long field currently uses a buffer of type long. When the flag for throwing exceptions on overflow for arithmetic operations in turned on, this is a problem in case there are intermediate overflows which are then resolved by other rows. Indeed, in such a case, we are throwing an exception, while the result is representable in a long value. An example of this issue can be seen running: {code} val df = sc.parallelize(Seq(100L, Long.MaxValue, -1000L)).toDF("a") df.select(sum($"a")).show() {code} According to [~cloud_fan]'s suggestion in https://github.com/apache/spark/pull/21599, we should introduce a flag in order to let users choose among a wider datatype for the sum buffer using a config, so that the above issue can be fixed. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org