| /** |
| * 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 static org.junit.Assert.assertEquals; |
| |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.protocol.Block; |
| import org.apache.hadoop.hdfs.server.common.GenerationStamp; |
| import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState; |
| import org.junit.Test; |
| |
| /** |
| * This class provides tests for BlockInfoUnderConstruction class |
| */ |
| public class TestBlockInfoUnderConstruction { |
| @Test |
| public void testInitializeBlockRecovery() throws Exception { |
| DatanodeStorageInfo s1 = DFSTestUtil.createDatanodeStorageInfo("10.10.1.1", "s1"); |
| DatanodeDescriptor dd1 = s1.getDatanodeDescriptor(); |
| DatanodeStorageInfo s2 = DFSTestUtil.createDatanodeStorageInfo("10.10.1.2", "s2"); |
| DatanodeDescriptor dd2 = s2.getDatanodeDescriptor(); |
| DatanodeStorageInfo s3 = DFSTestUtil.createDatanodeStorageInfo("10.10.1.3", "s3"); |
| DatanodeDescriptor dd3 = s3.getDatanodeDescriptor(); |
| |
| dd1.isAlive = dd2.isAlive = dd3.isAlive = true; |
| BlockInfoUnderConstruction blockInfo = new BlockInfoUnderConstruction( |
| new Block(0, 0, GenerationStamp.LAST_RESERVED_STAMP), |
| 3, |
| BlockUCState.UNDER_CONSTRUCTION, |
| new DatanodeStorageInfo[] {s1, s2, s3}); |
| |
| // Recovery attempt #1. |
| long currentTime = System.currentTimeMillis(); |
| dd1.setLastUpdate(currentTime - 3 * 1000); |
| dd2.setLastUpdate(currentTime - 1 * 1000); |
| dd3.setLastUpdate(currentTime - 2 * 1000); |
| blockInfo.initializeBlockRecovery(1); |
| BlockInfoUnderConstruction[] blockInfoRecovery = dd2.getLeaseRecoveryCommand(1); |
| assertEquals(blockInfoRecovery[0], blockInfo); |
| |
| // Recovery attempt #2. |
| currentTime = System.currentTimeMillis(); |
| dd1.setLastUpdate(currentTime - 2 * 1000); |
| dd2.setLastUpdate(currentTime - 1 * 1000); |
| dd3.setLastUpdate(currentTime - 3 * 1000); |
| blockInfo.initializeBlockRecovery(2); |
| blockInfoRecovery = dd1.getLeaseRecoveryCommand(1); |
| assertEquals(blockInfoRecovery[0], blockInfo); |
| |
| // Recovery attempt #3. |
| currentTime = System.currentTimeMillis(); |
| dd1.setLastUpdate(currentTime - 2 * 1000); |
| dd2.setLastUpdate(currentTime - 1 * 1000); |
| dd3.setLastUpdate(currentTime - 3 * 1000); |
| currentTime = System.currentTimeMillis(); |
| blockInfo.initializeBlockRecovery(3); |
| blockInfoRecovery = dd3.getLeaseRecoveryCommand(1); |
| assertEquals(blockInfoRecovery[0], blockInfo); |
| |
| // Recovery attempt #4. |
| // Reset everything. And again pick DN with most recent heart beat. |
| currentTime = System.currentTimeMillis(); |
| dd1.setLastUpdate(currentTime - 2 * 1000); |
| dd2.setLastUpdate(currentTime - 1 * 1000); |
| dd3.setLastUpdate(currentTime); |
| currentTime = System.currentTimeMillis(); |
| blockInfo.initializeBlockRecovery(3); |
| blockInfoRecovery = dd3.getLeaseRecoveryCommand(1); |
| assertEquals(blockInfoRecovery[0], blockInfo); |
| } |
| } |