| /* |
| * 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.cassandra.locator; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.util.*; |
| |
| import org.junit.Test; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.service.StorageService; |
| |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| public class DynamicEndpointSnitchLongTest |
| { |
| static |
| { |
| DatabaseDescriptor.daemonInitialization(); |
| } |
| |
| @Test |
| public void testConcurrency() throws InterruptedException, IOException, ConfigurationException |
| { |
| // The goal of this test is to check for CASSANDRA-8448/CASSANDRA-9519 |
| double badness = DatabaseDescriptor.getDynamicBadnessThreshold(); |
| DatabaseDescriptor.setDynamicBadnessThreshold(0.0); |
| |
| try |
| { |
| final int ITERATIONS = 10000; |
| |
| // do this because SS needs to be initialized before DES can work properly. |
| StorageService.instance.unsafeInitialize(); |
| SimpleSnitch ss = new SimpleSnitch(); |
| DynamicEndpointSnitch dsnitch = new DynamicEndpointSnitch(ss, String.valueOf(ss.hashCode())); |
| InetAddress self = FBUtilities.getBroadcastAddress(); |
| |
| List<InetAddress> hosts = new ArrayList<>(); |
| // We want a big list of hosts so sorting takes time, making it much more likely to reproduce the |
| // problem we're looking for. |
| for (int i = 0; i < 100; i++) |
| for (int j = 0; j < 256; j++) |
| hosts.add(InetAddress.getByAddress(new byte[]{127, 0, (byte)i, (byte)j})); |
| |
| ScoreUpdater updater = new ScoreUpdater(dsnitch, hosts); |
| updater.start(); |
| |
| List<InetAddress> result = null; |
| for (int i = 0; i < ITERATIONS; i++) |
| result = dsnitch.getSortedListByProximity(self, hosts); |
| |
| updater.stopped = true; |
| updater.join(); |
| } |
| finally |
| { |
| DatabaseDescriptor.setDynamicBadnessThreshold(badness); |
| } |
| } |
| |
| public static class ScoreUpdater extends Thread |
| { |
| private static final int SCORE_RANGE = 100; |
| |
| public volatile boolean stopped; |
| |
| private final DynamicEndpointSnitch dsnitch; |
| private final List<InetAddress> hosts; |
| private final Random random = new Random(); |
| |
| public ScoreUpdater(DynamicEndpointSnitch dsnitch, List<InetAddress> hosts) |
| { |
| this.dsnitch = dsnitch; |
| this.hosts = hosts; |
| } |
| |
| public void run() |
| { |
| while (!stopped) |
| { |
| InetAddress host = hosts.get(random.nextInt(hosts.size())); |
| int score = random.nextInt(SCORE_RANGE); |
| dsnitch.receiveTiming(host, score); |
| } |
| } |
| } |
| } |
| |