Sean Zhong 3977223a32 [SPARK-17617][SQL] Remainder(%) expression.eval returns incorrect result on double value ... ## What changes were proposed in this pull request? Remainder(%) expression's `eval()` returns incorrect result when the dividend is a big double. The reason is that Remainder converts the double dividend to decimal to do "%", and that lose precision. This bug only affects the `eval()` that is used by constant folding, the codegen path is not impacted. ### Before change ``` scala> -5083676433652386516D % 10 res2: Double = -6.0 scala> spark.sql("select -5083676433652386516D % 10 as a").show +---+ | a| +---+ |0.0| +---+ ``` ### After change ``` scala> spark.sql("select -5083676433652386516D % 10 as a").show +----+ | a| +----+ |-6.0| +----+ ``` ## How was this patch tested? Unit test. Author: Sean Zhong <seanzhong@databricks.com> Closes #15171 from clockfly/SPARK-17617.		2016-09-21 16:53:34 +08:00
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src	[SPARK-17617][SQL] Remainder(%) expression.eval returns incorrect result on double value	2016-09-21 16:53:34 +08:00
pom.xml	[SPARK-16535][BUILD] In pom.xml, remove groupId which is redundant definition and inherited from the parent	2016-07-19 11:59:46 +01:00