viirya commented on code in PR #39377: URL: https://github.com/apache/spark/pull/39377#discussion_r1063176762
########## sql/core/src/main/scala/org/apache/spark/sql/catalyst/optimizer/SelectivePredicateHelper.scala: ########## @@ -0,0 +1,48 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.catalyst.optimizer + +import org.apache.spark.sql.catalyst.expressions.PredicateHelper +import org.apache.spark.sql.catalyst.plans.logical.{Filter, LogicalPlan} +import org.apache.spark.sql.execution.FilterExec +import org.apache.spark.sql.execution.columnar.InMemoryRelation + +/** + * [[InMemoryRelation]] is at sql/core module, so this helper trait also places in sql/core. + */ +trait SelectivePredicateHelper extends PredicateHelper { + + /** + * Search a filtering predicate in a given logical plan + */ + def hasSelectivePredicate(plan: LogicalPlan): Boolean = { + plan.exists { + // We do not actually need a selective predicate if the `InMemoryRelation` is materialized, + // because its statistics is correct enough. The call side would validate if the statistics + // is bigger than requirements. + case relation: InMemoryRelation if relation.isMaterialized => true Review Comment: So if the other side (filtering plan) has any `InMemoryRelation`, it will trigger pruning? If the cached plan is just (small) part of the filtering plan? -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
