Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/492#discussion_r94931363
--- Diff:
integration/spark/src/main/scala/org/apache/spark/sql/optimizer/CarbonOptimizer.scala
---
@@ -72,23 +74,71 @@ object CarbonOptimizer {
class ResolveCarbonFunctions(relations: Seq[CarbonDecoderRelation])
extends Rule[LogicalPlan] with PredicateHelper {
val LOGGER = LogServiceFactory.getLogService(this.getClass.getName)
- def apply(plan: LogicalPlan): LogicalPlan = {
- if (relations.nonEmpty && !isOptimized(plan)) {
+ def apply(logicalPlan: LogicalPlan): LogicalPlan = {
+ if (relations.nonEmpty && !isOptimized(logicalPlan)) {
+ val plan = processPlan(logicalPlan)
+ val udfTransformedPlan = pushDownUDFToJoinLeftRelation(plan)
--- End diff --
Why plan change is required? I don't think it is better idea to do plan
changes in spark.
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