| /** |
| * 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.apache.hadoop.test.PlatformAssumptions.assumeNotWindows; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.StorageType; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.eclipse.jetty.util.ajax.JSON; |
| import org.junit.rules.Timeout; |
| |
| /** |
| * Class for testing {@link BlockStatsMXBean} implementation |
| */ |
| public class TestBlockStatsMXBean { |
| |
| private MiniDFSCluster cluster; |
| |
| @Rule |
| public Timeout globalTimeout = new Timeout(300000); |
| |
| @Before |
| public void setup() throws IOException { |
| HdfsConfiguration conf = new HdfsConfiguration(); |
| conf.setTimeDuration(DFSConfigKeys.DFS_DATANODE_DISK_CHECK_MIN_GAP_KEY, |
| 0, TimeUnit.MILLISECONDS); |
| cluster = null; |
| StorageType[][] types = new StorageType[6][]; |
| for (int i=0; i<3; i++) { |
| types[i] = new StorageType[] {StorageType.RAM_DISK, StorageType.DISK}; |
| } |
| for (int i=3; i< 5; i++) { |
| types[i] = new StorageType[] {StorageType.RAM_DISK, StorageType.ARCHIVE}; |
| } |
| types[5] = new StorageType[] {StorageType.RAM_DISK, StorageType.ARCHIVE, |
| StorageType.ARCHIVE}; |
| |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(6). |
| storageTypes(types).storagesPerDatanode(3).build(); |
| cluster.waitActive(); |
| } |
| |
| @After |
| public void tearDown() { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| |
| @Test |
| public void testStorageTypeStats() throws Exception { |
| Map<StorageType, StorageTypeStats> storageTypeStatsMap = |
| cluster.getNamesystem().getBlockManager().getStorageTypeStats(); |
| assertTrue(storageTypeStatsMap.containsKey(StorageType.RAM_DISK)); |
| assertTrue(storageTypeStatsMap.containsKey(StorageType.DISK)); |
| assertTrue(storageTypeStatsMap.containsKey(StorageType.ARCHIVE)); |
| |
| StorageTypeStats storageTypeStats = |
| storageTypeStatsMap.get(StorageType.RAM_DISK); |
| assertEquals(6, storageTypeStats.getNodesInService()); |
| |
| storageTypeStats = storageTypeStatsMap.get(StorageType.DISK); |
| assertEquals(3, storageTypeStats.getNodesInService()); |
| |
| storageTypeStats = storageTypeStatsMap.get(StorageType.ARCHIVE); |
| assertEquals(3, storageTypeStats.getNodesInService()); |
| } |
| |
| protected static String readOutput(URL url) throws IOException { |
| StringBuilder out = new StringBuilder(); |
| InputStream in = url.openConnection().getInputStream(); |
| byte[] buffer = new byte[64 * 1024]; |
| int len = in.read(buffer); |
| while (len > 0) { |
| out.append(new String(buffer, 0, len)); |
| len = in.read(buffer); |
| } |
| return out.toString(); |
| } |
| |
| @Test |
| @SuppressWarnings("unchecked") |
| public void testStorageTypeStatsJMX() throws Exception { |
| URL baseUrl = new URL (cluster.getHttpUri(0)); |
| String result = readOutput(new URL(baseUrl, "/jmx")); |
| |
| Map<String, Object> stat = (Map<String, Object>) JSON.parse(result); |
| Object[] beans =(Object[]) stat.get("beans"); |
| Map<String, Object> blockStats = null; |
| for (Object bean : beans) { |
| Map<String, Object> map = (Map<String, Object>) bean; |
| if (map.get("name").equals("Hadoop:service=NameNode,name=BlockStats")) { |
| blockStats = map; |
| } |
| } |
| assertNotNull(blockStats); |
| Object[] storageTypeStatsList = |
| (Object[])blockStats.get("StorageTypeStats"); |
| assertNotNull(storageTypeStatsList); |
| assertEquals (3, storageTypeStatsList.length); |
| |
| Set<String> typesPresent = new HashSet<> (); |
| for (Object obj : storageTypeStatsList) { |
| Map<String, Object> entry = (Map<String, Object>)obj; |
| String storageType = (String)entry.get("key"); |
| Map<String,Object> storageTypeStats = (Map<String,Object>)entry.get("value"); |
| typesPresent.add(storageType); |
| if (storageType.equals("ARCHIVE") || storageType.equals("DISK") ) { |
| assertEquals(3l, storageTypeStats.get("nodesInService")); |
| } else if (storageType.equals("RAM_DISK")) { |
| assertEquals(6l, storageTypeStats.get("nodesInService")); |
| } |
| else { |
| fail(); |
| } |
| } |
| |
| assertTrue(typesPresent.contains("ARCHIVE")); |
| assertTrue(typesPresent.contains("DISK")); |
| assertTrue(typesPresent.contains("RAM_DISK")); |
| } |
| |
| @Test |
| public void testStorageTypeStatsWhenStorageFailed() throws Exception { |
| // The test uses DataNodeTestUtils#injectDataDirFailure() to simulate |
| // volume failures which is currently not supported on Windows. |
| assumeNotWindows(); |
| |
| DFSTestUtil.createFile(cluster.getFileSystem(), |
| new Path("/blockStatsFile1"), 1024, (short) 1, 0L); |
| Map<StorageType, StorageTypeStats> storageTypeStatsMap = cluster |
| .getNamesystem().getBlockManager().getStorageTypeStats(); |
| |
| StorageTypeStats storageTypeStats = storageTypeStatsMap |
| .get(StorageType.RAM_DISK); |
| assertEquals(6, storageTypeStats.getNodesInService()); |
| |
| storageTypeStats = storageTypeStatsMap.get(StorageType.DISK); |
| assertEquals(3, storageTypeStats.getNodesInService()); |
| |
| storageTypeStats = storageTypeStatsMap.get(StorageType.ARCHIVE); |
| assertEquals(3, storageTypeStats.getNodesInService()); |
| File dn1ArcVol1 = cluster.getInstanceStorageDir(0, 1); |
| File dn2ArcVol1 = cluster.getInstanceStorageDir(1, 1); |
| File dn3ArcVol1 = cluster.getInstanceStorageDir(2, 1); |
| DataNodeTestUtils.injectDataDirFailure(dn1ArcVol1); |
| DataNodeTestUtils.injectDataDirFailure(dn2ArcVol1); |
| DataNodeTestUtils.injectDataDirFailure(dn3ArcVol1); |
| try { |
| DFSTestUtil.createFile(cluster.getFileSystem(), new Path( |
| "/blockStatsFile2"), 1024, (short) 1, 0L); |
| fail("Should throw exception, becuase no DISK storage available"); |
| } catch (Exception e) { |
| assertTrue(e.getMessage().contains( |
| "could only be written to 0 of the 1 minReplication")); |
| } |
| // wait for heartbeat |
| Thread.sleep(6000); |
| storageTypeStatsMap = cluster.getNamesystem().getBlockManager() |
| .getStorageTypeStats(); |
| assertFalse("StorageTypeStatsMap should not contain DISK Storage type", |
| storageTypeStatsMap.containsKey(StorageType.DISK)); |
| DataNodeTestUtils.restoreDataDirFromFailure(dn1ArcVol1); |
| DataNodeTestUtils.restoreDataDirFromFailure(dn2ArcVol1); |
| DataNodeTestUtils.restoreDataDirFromFailure(dn3ArcVol1); |
| for (int i = 0; i < 3; i++) { |
| cluster.restartDataNode(0, true); |
| } |
| // wait for heartbeat |
| Thread.sleep(6000); |
| storageTypeStatsMap = cluster.getNamesystem().getBlockManager() |
| .getStorageTypeStats(); |
| storageTypeStats = storageTypeStatsMap.get(StorageType.RAM_DISK); |
| assertEquals(6, storageTypeStats.getNodesInService()); |
| |
| storageTypeStats = storageTypeStatsMap.get(StorageType.DISK); |
| assertEquals(3, storageTypeStats.getNodesInService()); |
| |
| storageTypeStats = storageTypeStatsMap.get(StorageType.ARCHIVE); |
| assertEquals(3, storageTypeStats.getNodesInService()); |
| } |
| } |