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ASF GitHub Bot commented on KYLIN-5387: --------------------------------------- dethrive commented on code in PR #2089: URL: https://github.com/apache/kylin/pull/2089#discussion_r1107482568 ########## src/spark-project/engine-spark/src/main/scala/org/apache/kylin/engine/spark/model/planner/CuboIdToLayoutUtils.java: ########## @@ -0,0 +1,162 @@ +/* + * 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.kylin.engine.spark.model.planner; + +import java.math.BigInteger; +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +import org.apache.kylin.metadata.cube.cuboid.NAggregationGroup; +import org.apache.kylin.metadata.cube.model.LayoutEntity; +import org.apache.kylin.metadata.cube.model.RuleBasedIndex; + +import com.google.common.collect.Lists; + +public class CuboIdToLayoutUtils { + /** + * convert the cuboids to layout entity + * + * @param cuboids + * @param ruleBasedIndex + * @return + */ + public static Set<LayoutEntity> convertCuboIdsToLayoutEntity(Map<BigInteger, Long> cuboids, + RuleBasedIndex ruleBasedIndex) { + // convert the cuboid to each agg group + Set<LayoutEntity> result = new HashSet<>(); + List<NAggregationGroup> aggregationGroups = ruleBasedIndex.getAggregationGroups(); + for (NAggregationGroup group : aggregationGroups) { + // dimension order in this agg group + List<Integer> dimensionOrder = Lists.newArrayList(group.getIncludes()); + // measure order in this agg group + List<Integer> measuresIds = Lists.newArrayList(group.getMeasures()); + Set<List<Integer>> colOrders = convertCuboIdsToColOrders(cuboids, ruleBasedIndex.countOfIncludeDimension(), + measuresIds, ruleBasedIndex.getRowKeyIdToColumnId(), dimensionOrder); + for (List<Integer> colOrder : colOrders) { + result.add(createRecommendAggIndexLayout(colOrder)); + } + } + + // base agg layout for each agg group + for (NAggregationGroup group : aggregationGroups) { + List<Integer> colOrders = Lists.newArrayList(); + // all dimension in the agg + colOrders.addAll(Lists.newArrayList(group.getIncludes())); + // all measure in this agg + colOrders.addAll(Lists.newArrayList(group.getMeasures())); + result.add(createRecommendAggIndexLayout(colOrders)); + } + return result; + } + + /** + * create recommend agg layout base on the colOrder. + * + * @param colOrder + * @return LayoutEntity or null + * null: if the measures in the colOrder can't match the measures in this Index Plan + */ + private static LayoutEntity createRecommendAggIndexLayout(List<Integer> colOrder) { + LayoutEntity newAddIndexLayout = new LayoutEntity(); + // The layout is not the manual + newAddIndexLayout.setManual(false); + newAddIndexLayout.setColOrder(colOrder); + newAddIndexLayout.setUpdateTime(System.currentTimeMillis()); + newAddIndexLayout.setBase(false); + newAddIndexLayout.initalId(true); Review Comment: 这边是 initial id 吗?这个单词有拼写错误,建议一并更正一下。 > Migrate cube planner phase 1 to kylin5 > -------------------------------------- > > Key: KYLIN-5387 > URL: https://issues.apache.org/jira/browse/KYLIN-5387 > Project: Kylin > Issue Type: Improvement > Components: Job Engine > Affects Versions: 5.0-alpha > Reporter: Kun Liu > Assignee: Kun Liu > Priority: Major > > kylin3.1 support the cube planner to recommend cuboid when building the first > segment. > > We need to migrate the cost based algorithm to the kylin5, and leverage the > cube planner algorithm with the index in kylin5 > > designe doc: > https://docs.google.com/document/d/1wUNd8U1u-w8T-qQUReplPhDFkETj3AtFr_Shex501ls/edit?usp=sharing -- This message was sent by Atlassian Jira (v8.20.10#820010)