| /* |
| * 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.iotdb.confignode.manager.hash; |
| |
| import org.apache.iotdb.confignode.manager.ConfigManager; |
| import org.apache.iotdb.confignode.manager.partition.PartitionManager; |
| import org.apache.iotdb.confignode.persistence.partition.PartitionInfo; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Random; |
| |
| /** |
| * This is a not active test class, which can be used for general index testing when there is a new |
| * DeviceGroup hash algorithm |
| */ |
| public class DeviceGroupHashExecutorManualTest { |
| |
| private static final int deviceGroupCount = 10_000; |
| private static final String sg = "root.SGGroup."; |
| private static final int batchCount = 10_000; |
| private static final int batchSize = 10_000; |
| private static final String chars = |
| "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-"; |
| |
| private List<String> genBatchDevices() { |
| Random random = new Random(); |
| List<String> devices = new ArrayList<>(); |
| int fatherLength = random.nextInt(10) + 10; |
| int deviceLength = random.nextInt(5) + 5; |
| |
| for (int i = 0; i < batchSize; i++) { |
| StringBuilder curDevice = new StringBuilder(sg); |
| for (int j = 0; j < fatherLength; j++) { |
| curDevice.append(chars.charAt(random.nextInt(chars.length()))); |
| } |
| curDevice.append('.'); |
| for (int k = 0; k < deviceLength; k++) { |
| curDevice.append(chars.charAt(random.nextInt(chars.length()))); |
| } |
| devices.add(curDevice.toString()); |
| } |
| return devices; |
| } |
| |
| public void GeneralIndexTest() throws IOException { |
| PartitionManager manager = new PartitionManager(new ConfigManager(), new PartitionInfo()); |
| int[] bucket = new int[deviceGroupCount]; |
| Arrays.fill(bucket, 0); |
| |
| long totalTime = 0; |
| for (int i = 0; i < batchCount; i++) { |
| List<String> devices = genBatchDevices(); |
| totalTime -= System.currentTimeMillis(); |
| for (String device : devices) { |
| bucket[manager.getSeriesPartitionSlot(device).getSlotId()] += 1; |
| } |
| totalTime += System.currentTimeMillis(); |
| } |
| |
| Arrays.sort(bucket); |
| int firstNotNull = 0; |
| for (; ; firstNotNull++) { |
| if (bucket[firstNotNull] > 0) { |
| break; |
| } |
| } |
| System.out.println("Empty DeviceGroup count: " + firstNotNull); |
| System.out.println("Minimum DeviceGroup size: " + bucket[firstNotNull]); |
| System.out.println("Maximal DeviceGroup size: " + bucket[deviceGroupCount - 1]); |
| System.out.println( |
| "Average size of nonempty DeviceGroup: " |
| + (double) (batchCount * batchSize) / (double) (deviceGroupCount - firstNotNull)); |
| System.out.println( |
| "Median size of nonempty DeviceGroup: " + bucket[(deviceGroupCount - firstNotNull) / 2]); |
| System.out.println("Total time-consuming: " + (double) totalTime / 1000.0 + "s"); |
| } |
| } |