GitHub user cloud-fan opened a pull request: https://github.com/apache/spark/pull/22494
[SPARK-22036][SQL][followup] DECIMAL_OPERATIONS_ALLOW_PREC_LOSS should cover all the behavior changes ## What changes were proposed in this pull request? https://github.com/apache/spark/pull/20023 proposed to allow precision lose during decimal operations, to reduce the possibilities of overflow. This is a behavior change and is protected by the DECIMAL_OPERATIONS_ALLOW_PREC_LOSS config. However, this config doesn't cover all the code paths. This PR fixes it. More context: The behavior change of #20023 exposed a long-standing bug about negative scale, which is hard to fix. For details see https://issues.apache.org/jira/browse/SPARK-25454 . ## How was this patch tested? a new test You can merge this pull request into a Git repository by running: $ git pull https://github.com/cloud-fan/spark decimal Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/22494.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 #22494 ---- commit 0f6ec74dbac4b1093e3b0fdef86a43aa7237ad05 Author: Wenchen Fan <wenchen@...> Date: 2018-09-20T12:15:41Z DECIMAL_OPERATIONS_ALLOW_PREC_LOSS should cover all the behavior changes ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org