wangyum commented on a change in pull request #35214: URL: https://github.com/apache/spark/pull/35214#discussion_r791357478
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala ########## @@ -1300,16 +1300,22 @@ object InferFiltersFromConstraints extends Rule[LogicalPlan] * Combines all adjacent [[Union]] operators into a single [[Union]]. */ object CombineUnions extends Rule[LogicalPlan] { - def apply(plan: LogicalPlan): LogicalPlan = plan.transformDownWithPruning( - _.containsAnyPattern(UNION, DISTINCT_LIKE), ruleId) { - case u: Union => flattenUnion(u, false) - case Distinct(u: Union) => Distinct(flattenUnion(u, true)) - // Only handle distinct-like 'Deduplicate', where the keys == output - case Deduplicate(keys: Seq[Attribute], u: Union) if AttributeSet(keys) == u.outputSet => - Deduplicate(keys, flattenUnion(u, true)) + import CollapseProject.{buildCleanedProjectList, canCollapseExpressions} + import PushProjectionThroughUnion.pushProjectionThroughUnion + + def apply(plan: LogicalPlan): LogicalPlan = { + val alwaysInline = conf.getConf(SQLConf.COLLAPSE_PROJECT_ALWAYS_INLINE) Review comment: +1 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org