| /** |
| * 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.hadoop.hdfs.server.blockmanagement; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.TestBlockStoragePolicy; |
| import org.apache.hadoop.hdfs.server.namenode.NameNode; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Set; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| @RunWith(Parameterized.class) |
| public class TestReplicationPolicyExcludeSlowNodes |
| extends BaseReplicationPolicyTest { |
| |
| public TestReplicationPolicyExcludeSlowNodes(String blockPlacementPolicy) { |
| this.blockPlacementPolicy = blockPlacementPolicy; |
| } |
| |
| @Parameterized.Parameters |
| public static Iterable<Object[]> data() { |
| return Arrays.asList(new Object[][] { |
| {BlockPlacementPolicyDefault.class.getName()}, |
| {BlockPlacementPolicyWithUpgradeDomain.class.getName()}, |
| {AvailableSpaceBlockPlacementPolicy.class.getName()}, |
| {BlockPlacementPolicyRackFaultTolerant.class.getName()}, |
| {AvailableSpaceRackFaultTolerantBlockPlacementPolicy.class.getName()}, |
| }); |
| } |
| |
| @Override |
| DatanodeDescriptor[] getDatanodeDescriptors(Configuration conf) { |
| conf.setBoolean(DFSConfigKeys |
| .DFS_DATANODE_PEER_STATS_ENABLED_KEY, |
| true); |
| conf.setStrings(DFSConfigKeys |
| .DFS_NAMENODE_SLOWPEER_COLLECT_INTERVAL_KEY, |
| "1s"); |
| conf.setBoolean(DFSConfigKeys |
| .DFS_NAMENODE_BLOCKPLACEMENTPOLICY_EXCLUDE_SLOW_NODES_ENABLED_KEY, |
| true); |
| final String[] racks = { |
| "/rack1", |
| "/rack2", |
| "/rack3", |
| "/rack4", |
| "/rack5", |
| "/rack6"}; |
| storages = DFSTestUtil.createDatanodeStorageInfos(racks); |
| return DFSTestUtil.toDatanodeDescriptor(storages); |
| } |
| |
| /** |
| * Tests that chooseTarget when excludeSlowNodesEnabled set to true. |
| */ |
| @Test |
| public void testChooseTargetExcludeSlowNodes() throws Exception { |
| namenode.getNamesystem().writeLock(); |
| try { |
| // add nodes |
| for (int i = 0; i < dataNodes.length; i++) { |
| dnManager.addDatanode(dataNodes[i]); |
| } |
| |
| // mock slow nodes |
| SlowPeerTracker tracker = dnManager.getSlowPeerTracker(); |
| tracker.addReport(dataNodes[0].getInfoAddr(), dataNodes[3].getInfoAddr()); |
| tracker.addReport(dataNodes[0].getInfoAddr(), dataNodes[4].getInfoAddr()); |
| tracker.addReport(dataNodes[1].getInfoAddr(), dataNodes[4].getInfoAddr()); |
| tracker.addReport(dataNodes[1].getInfoAddr(), dataNodes[5].getInfoAddr()); |
| tracker.addReport(dataNodes[2].getInfoAddr(), dataNodes[3].getInfoAddr()); |
| tracker.addReport(dataNodes[2].getInfoAddr(), dataNodes[5].getInfoAddr()); |
| |
| // waiting for slow nodes collector run |
| Thread.sleep(3000); |
| |
| // fetch slow nodes |
| Set<String> slowPeers = dnManager.getSlowPeersUuidSet(); |
| |
| // assert slow nodes |
| assertEquals(3, slowPeers.size()); |
| for (int i = 0; i < slowPeers.size(); i++) { |
| assertTrue(slowPeers.contains(dataNodes[i].getDatanodeUuid())); |
| } |
| |
| // mock writer |
| DatanodeDescriptor writerDn = dataNodes[0]; |
| |
| // call chooseTarget() |
| DatanodeStorageInfo[] targets = namenode.getNamesystem().getBlockManager() |
| .getBlockPlacementPolicy().chooseTarget("testFile.txt", 3, |
| writerDn, new ArrayList<DatanodeStorageInfo>(), false, null, |
| 1024, TestBlockStoragePolicy.DEFAULT_STORAGE_POLICY, null); |
| |
| // assert targets |
| assertEquals(3, targets.length); |
| for (int i = 0; i < targets.length; i++) { |
| assertTrue(!slowPeers.contains(targets[i].getDatanodeDescriptor() |
| .getDatanodeUuid())); |
| } |
| } finally { |
| namenode.getNamesystem().writeUnlock(); |
| } |
| NameNode.LOG.info("Done working on it"); |
| } |
| |
| } |