GitHub user ueshin opened a pull request: https://github.com/apache/spark/pull/22200
[SPARK-25208][SQL] Loosen Cast.forceNullable for DecimalType. ## What changes were proposed in this pull request? Casting to `DecimalType` is not always needed to force nullable. If the decimal type to cast is wider than original type, or only truncating or precision loss, the casted value won't be `null`. ## How was this patch tested? Added and modified tests. You can merge this pull request into a Git repository by running: $ git pull https://github.com/ueshin/apache-spark issues/SPARK-25208/cast_nullable_decimal Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/22200.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #22200 ---- commit e134258738c0dfa43533422d88bd16ce90e92743 Author: Takuya UESHIN <ueshin@...> Date: 2018-08-23T10:05:26Z Loosen `Cast.forceNullable` for DecimalType. ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org