dongjoon-hyun commented on a change in pull request #26978: [SPARK-29721][SQL] Prune unnecessary nested fields from Generate without Project URL: https://github.com/apache/spark/pull/26978#discussion_r368214636
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala ########## @@ -155,6 +155,49 @@ object NestedColumnAliasing { case MapType(keyType, valueType, _) => totalFieldNum(keyType) + totalFieldNum(valueType) case _ => 1 // UDT and others } +} + +/** + * This prunes unnessary nested columns from `Generate` and optional `Project` on top + * of it. + */ +object GeneratorNestedColumnAliasing { + def unapply(plan: LogicalPlan): Option[LogicalPlan] = plan match { + case Project(projectList, g: Generate) if (SQLConf.get.nestedPruningOnExpressions || + SQLConf.get.nestedSchemaPruningEnabled) && canPruneGenerator(g.generator) => Review comment: @viirya . It seems that we are going to lose the ability to disable one of them safely after this PR. Are we still able to use one of them independently? ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org