jasperjiaguo commented on code in PR #11578: URL: https://github.com/apache/pinot/pull/11578#discussion_r1371079962
########## pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/assignment/instance/PreConfiguredInstancePartitionSelector.java: ########## @@ -0,0 +1,304 @@ +/** + * 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.instance; + +import com.google.common.base.Preconditions; +import java.util.AbstractMap; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Random; +import java.util.Set; +import java.util.function.Function; +import java.util.stream.Collectors; +import org.apache.helix.model.InstanceConfig; +import org.apache.pinot.common.assignment.InstancePartitions; +import org.apache.pinot.spi.config.table.assignment.InstanceReplicaGroupPartitionConfig; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +public class PreConfiguredInstancePartitionSelector extends InstancePartitionSelector { + private static final Logger LOGGER = LoggerFactory.getLogger(PreConfiguredInstancePartitionSelector.class); + private final InstancePartitions _preConfiguredInstancePartitions; + + // dimensions of target instance partition + private final int _numTargetInstancesPerReplicaGroup; + private final int _numTargetReplicaGroups; + private final int _numTargetTotalInstances; + + // dimensions of pre-configured instance partition + private int _numPreConfiguredReplicaGroups; + private int _numPreConfiguredInstancesPerReplicaGroup; + + // dimensions of existing instance partition + private int _numExistingReplicaGroups; + private int _numExistingInstancesPerReplicaGroup; + + // look up tables for pre-configured instance partition + private final List<List<String>> _preConfiguredMirroredServerLists = new ArrayList<>(); + private final Map<String, Integer> _preConfiguredInstanceNameToOffsetMap = new HashMap<>(); + + private final List<List<String>> _existingMirroredServerLists = new ArrayList<>(); + + public PreConfiguredInstancePartitionSelector(InstanceReplicaGroupPartitionConfig replicaGroupPartitionConfig, + String tableNameWithType, InstancePartitions existingInstancePartitions, + InstancePartitions preConfiguredInstancePartitions) { + super(replicaGroupPartitionConfig, tableNameWithType, existingInstancePartitions); + _preConfiguredInstancePartitions = preConfiguredInstancePartitions; + _numTargetInstancesPerReplicaGroup = _replicaGroupPartitionConfig.getNumInstancesPerReplicaGroup(); + _numTargetReplicaGroups = _replicaGroupPartitionConfig.getNumReplicaGroups(); + _numTargetTotalInstances = _numTargetInstancesPerReplicaGroup * _numTargetReplicaGroups; + } + + /** + * validate if the poolToInstanceConfigsMap is a valid input for pre-configuration based replica-group selection + */ + private void validatePoolDiversePreconditions(Map<Integer, List<InstanceConfig>> poolToInstanceConfigsMap) { + + LOGGER.info("Validating pre-configured instance partitions for pre-configuration based replica-group selection"); + + // numTargetInstancesPerReplica should be positive + Preconditions.checkState(_numTargetInstancesPerReplicaGroup > 0, Review Comment: done -- 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: commits-unsubscr...@pinot.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For additional commands, e-mail: commits-h...@pinot.apache.org
