GSharayu commented on code in PR #9309: URL: https://github.com/apache/pinot/pull/9309#discussion_r969894943
########## pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/assignment/segment/strategy/SegmentAssignmentStrategyFactory.java: ########## @@ -0,0 +1,110 @@ +/** + * 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.pinot.controller.helix.core.assignment.segment.strategy; + +import java.util.HashMap; +import java.util.Map; +import org.apache.helix.HelixManager; +import org.apache.pinot.common.assignment.InstancePartitions; +import org.apache.pinot.spi.config.table.TableConfig; +import org.apache.pinot.spi.config.table.TableType; +import org.apache.pinot.spi.config.table.assignment.InstancePartitionsType; +import org.apache.pinot.spi.config.table.assignment.SegmentAssignmentConfig; +import org.apache.pinot.spi.utils.CommonConstants.Segment.AssignmentStrategy; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +/** + * Factory for SegmentAssignmentStrategy + */ +public class SegmentAssignmentStrategyFactory { + + private static final Logger LOGGER = LoggerFactory.getLogger(SegmentAssignmentStrategyFactory.class); + private SegmentAssignmentStrategyFactory() { + } + + /** + * Determine Segment Assignment strategy + */ + public static Map<InstancePartitionsType, SegmentAssignmentStrategy> + getSegmentAssignmentStrategy(HelixManager helixManager, + TableConfig tableConfig, Map<InstancePartitionsType, InstancePartitions> instancePartitionsMap) { + String assignmentStrategy = null; + Map<InstancePartitionsType, SegmentAssignmentStrategy> segmentAssignmentStrategyMap = new HashMap<>(); + + TableType currentTableType = tableConfig.getTableType(); + // TODO: Handle segment assignment strategy in future for CONSUMING segments in follow up PR + InstancePartitionsType instancePartitionsType = currentTableType == TableType.OFFLINE + ? InstancePartitionsType.OFFLINE + : InstancePartitionsType.COMPLETED; + + // Accommodate new changes for assignment strategy + Map<String, SegmentAssignmentConfig> + segmentAssignmentConfigMap = tableConfig.getSegmentAssignmentConfigMap(); + + if (tableConfig.isDimTable()) { + // Segment Assignment Strategy for DIM tables + SegmentAssignmentStrategy segmentAssignmentStrategy = new DimTableSegmentAssignmentStrategy(); + segmentAssignmentStrategy.init(helixManager, tableConfig); + segmentAssignmentStrategyMap.put(instancePartitionsType, segmentAssignmentStrategy); Review Comment: done ########## pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/assignment/segment/BaseSegmentAssignment.java: ########## @@ -93,62 +96,22 @@ public void init(HelixManager helixManager, TableConfig tableConfig) { protected abstract int getReplication(TableConfig tableConfig); /** - * Helper method to check whether the number of replica-groups matches the table replication for replica-group based - * instance partitions. Log a warning if they do not match and use the one inside the instance partitions. The - * mismatch can happen when table is not configured correctly (table replication and numReplicaGroups does not match - * or replication changed without reassigning instances). + * Set Segment assignment strategy for different instance partitions and puts into a map of + * Map<InstancePartitionsType, SegmentAssignmentStrategy> */ - protected void checkReplication(InstancePartitions instancePartitions) { - int numReplicaGroups = instancePartitions.getNumReplicaGroups(); - if (numReplicaGroups != _replication) { - _logger.warn( - "Number of replica-groups in instance partitions {}: {} does not match replication in table config: {} for " - + "table: {}, using: {}", instancePartitions.getInstancePartitionsName(), numReplicaGroups, _replication, - _tableNameWithType, numReplicaGroups); - } - } - - /** - * Helper method to assign instances based on the current assignment and instance partitions. - */ - protected List<String> assignSegment(String segmentName, Map<String, Map<String, String>> currentAssignment, - InstancePartitions instancePartitions) { - int numReplicaGroups = instancePartitions.getNumReplicaGroups(); - int numPartitions = instancePartitions.getNumPartitions(); - - if (numReplicaGroups == 1 && numPartitions == 1) { - // Non-replica-group based assignment - - return SegmentAssignmentUtils.assignSegmentWithoutReplicaGroup(currentAssignment, instancePartitions, - _replication); - } else { - // Replica-group based assignment - - checkReplication(instancePartitions); - - int partitionId; - if (_partitionColumn == null || numPartitions == 1) { - partitionId = 0; - } else { - // Uniformly spray the segment partitions over the instance partitions - partitionId = getSegmentPartitionId(segmentName) % numPartitions; - } - - return SegmentAssignmentUtils.assignSegmentWithReplicaGroup(currentAssignment, instancePartitions, partitionId); - } + protected void setSegmentAssignmentStrategyMap( Review Comment: done -- This is an automated message from the Apache Git Service. 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