| /** |
| * 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.datanode; |
| |
| import java.lang.management.ManagementFactory; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.management.MBeanServer; |
| import javax.management.ObjectName; |
| |
| import com.google.common.base.Supplier; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.codehaus.jackson.map.ObjectMapper; |
| import org.codehaus.jackson.type.TypeReference; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.mortbay.util.ajax.JSON; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Class for testing {@link DataNodeMXBean} implementation |
| */ |
| public class TestDataNodeMXBean { |
| |
| public static final Log LOG = LogFactory.getLog(TestDataNodeMXBean.class); |
| |
| @Test |
| public void testDataNodeMXBean() throws Exception { |
| Configuration conf = new Configuration(); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| |
| try { |
| List<DataNode> datanodes = cluster.getDataNodes(); |
| Assert.assertEquals(datanodes.size(), 1); |
| DataNode datanode = datanodes.get(0); |
| |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName mxbeanName = new ObjectName( |
| "Hadoop:service=DataNode,name=DataNodeInfo"); |
| // get attribute "ClusterId" |
| String clusterId = (String) mbs.getAttribute(mxbeanName, "ClusterId"); |
| Assert.assertEquals(datanode.getClusterId(), clusterId); |
| // get attribute "Version" |
| String version = (String)mbs.getAttribute(mxbeanName, "Version"); |
| Assert.assertEquals(datanode.getVersion(),version); |
| // get attribute "RpcPort" |
| String rpcPort = (String)mbs.getAttribute(mxbeanName, "RpcPort"); |
| Assert.assertEquals(datanode.getRpcPort(),rpcPort); |
| // get attribute "HttpPort" |
| String httpPort = (String)mbs.getAttribute(mxbeanName, "HttpPort"); |
| Assert.assertEquals(datanode.getHttpPort(),httpPort); |
| // get attribute "NamenodeAddresses" |
| String namenodeAddresses = (String)mbs.getAttribute(mxbeanName, |
| "NamenodeAddresses"); |
| Assert.assertEquals(datanode.getNamenodeAddresses(),namenodeAddresses); |
| // get attribute "getDatanodeHostname" |
| String datanodeHostname = (String)mbs.getAttribute(mxbeanName, |
| "DatanodeHostname"); |
| Assert.assertEquals(datanode.getDatanodeHostname(),datanodeHostname); |
| // get attribute "getVolumeInfo" |
| String volumeInfo = (String)mbs.getAttribute(mxbeanName, "VolumeInfo"); |
| Assert.assertEquals(replaceDigits(datanode.getVolumeInfo()), |
| replaceDigits(volumeInfo)); |
| // Ensure mxbean's XceiverCount is same as the DataNode's |
| // live value. |
| int xceiverCount = (Integer)mbs.getAttribute(mxbeanName, |
| "XceiverCount"); |
| Assert.assertEquals(datanode.getXceiverCount(), xceiverCount); |
| // Ensure mxbean's XmitsInProgress is same as the DataNode's |
| // live value. |
| int xmitsInProgress = |
| (Integer) mbs.getAttribute(mxbeanName, "XmitsInProgress"); |
| Assert.assertEquals(datanode.getXmitsInProgress(), xmitsInProgress); |
| String bpActorInfo = (String)mbs.getAttribute(mxbeanName, |
| "BPServiceActorInfo"); |
| Assert.assertEquals(datanode.getBPServiceActorInfo(), bpActorInfo); |
| String slowDisks = (String)mbs.getAttribute(mxbeanName, "SlowDisks"); |
| Assert.assertEquals(datanode.getSlowDisks(), slowDisks); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| private static String replaceDigits(final String s) { |
| return s.replaceAll("[0-9]+", "_DIGITS_"); |
| } |
| |
| @Test |
| public void testDataNodeMXBeanBlockSize() throws Exception { |
| Configuration conf = new Configuration(); |
| |
| try(MiniDFSCluster cluster = |
| new MiniDFSCluster.Builder(conf).build()) { |
| DataNode dn = cluster.getDataNodes().get(0); |
| for (int i = 0; i < 100; i++) { |
| DFSTestUtil.writeFile( |
| cluster.getFileSystem(), |
| new Path("/foo" + String.valueOf(i) + ".txt"), "test content"); |
| } |
| DataNodeTestUtils.triggerBlockReport(dn); |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName mxbeanName = new ObjectName( |
| "Hadoop:service=DataNode,name=DataNodeInfo"); |
| String bpActorInfo = (String)mbs.getAttribute(mxbeanName, |
| "BPServiceActorInfo"); |
| Assert.assertEquals(dn.getBPServiceActorInfo(), bpActorInfo); |
| LOG.info("bpActorInfo is " + bpActorInfo); |
| TypeReference<ArrayList<Map<String, String>>> typeRef |
| = new TypeReference<ArrayList<Map<String, String>>>() {}; |
| ArrayList<Map<String, String>> bpActorInfoList = |
| new ObjectMapper().readValue(bpActorInfo, typeRef); |
| int maxDataLength = |
| Integer.valueOf(bpActorInfoList.get(0).get("maxDataLength")); |
| int confMaxDataLength = dn.getConf().getInt( |
| CommonConfigurationKeys.IPC_MAXIMUM_DATA_LENGTH, |
| CommonConfigurationKeys.IPC_MAXIMUM_DATA_LENGTH_DEFAULT); |
| int maxBlockReportSize = |
| Integer.valueOf(bpActorInfoList.get(0).get("maxBlockReportSize")); |
| LOG.info("maxDataLength is " + maxDataLength); |
| LOG.info("maxBlockReportSize is " + maxBlockReportSize); |
| assertTrue("maxBlockReportSize should be greater than zero", |
| maxBlockReportSize > 0); |
| assertEquals("maxDataLength should be exactly " |
| + "the same value of ipc.maximum.data.length", |
| confMaxDataLength, |
| maxDataLength); |
| } |
| } |
| |
| @Test |
| public void testDataNodeMXBeanBlockCount() throws Exception { |
| Configuration conf = new Configuration(); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| |
| try { |
| List<DataNode> datanodes = cluster.getDataNodes(); |
| assertEquals(datanodes.size(), 1); |
| |
| final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| final ObjectName mxbeanName = |
| new ObjectName("Hadoop:service=DataNode,name=DataNodeInfo"); |
| FileSystem fs = cluster.getFileSystem(); |
| for (int i = 0; i < 5; i++) { |
| DFSTestUtil.createFile(fs, new Path("/tmp.txt" + i), 1024, (short) 1, |
| 1L); |
| } |
| assertEquals("Before restart DN", 5, getTotalNumBlocks(mbs, mxbeanName)); |
| cluster.restartDataNode(0); |
| cluster.waitActive(); |
| assertEquals("After restart DN", 5, getTotalNumBlocks(mbs, mxbeanName)); |
| fs.delete(new Path("/tmp.txt1"), true); |
| // The total numBlocks should be updated after one file is deleted |
| GenericTestUtils.waitFor(new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| try { |
| return getTotalNumBlocks(mbs, mxbeanName) == 4; |
| } catch (Exception e) { |
| e.printStackTrace(); |
| return false; |
| } |
| } |
| }, 100, 30000); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| private int getTotalNumBlocks(MBeanServer mbs, ObjectName mxbeanName) |
| throws Exception { |
| int totalBlocks = 0; |
| String volumeInfo = (String) mbs.getAttribute(mxbeanName, "VolumeInfo"); |
| Map<?, ?> m = (Map<?, ?>) JSON.parse(volumeInfo); |
| Collection<Map<String, Long>> values = |
| (Collection<Map<String, Long>>) m.values(); |
| for (Map<String, Long> volumeInfoMap : values) { |
| totalBlocks += volumeInfoMap.get("numBlocks"); |
| } |
| return totalBlocks; |
| } |
| |
| @Test |
| public void testDataNodeMXBeanSlowDisksEnabled() throws Exception { |
| Configuration conf = new Configuration(); |
| conf.setInt(DFSConfigKeys |
| .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_PERCENTAGE_KEY, 100); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| |
| try { |
| List<DataNode> datanodes = cluster.getDataNodes(); |
| Assert.assertEquals(datanodes.size(), 1); |
| DataNode datanode = datanodes.get(0); |
| String slowDiskPath = "test/data1/slowVolume"; |
| datanode.getDiskMetrics().addSlowDiskForTesting(slowDiskPath, null); |
| |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName mxbeanName = new ObjectName( |
| "Hadoop:service=DataNode,name=DataNodeInfo"); |
| |
| String slowDisks = (String)mbs.getAttribute(mxbeanName, "SlowDisks"); |
| Assert.assertEquals(datanode.getSlowDisks(), slowDisks); |
| Assert.assertTrue(slowDisks.contains(slowDiskPath)); |
| } finally { |
| if (cluster != null) {cluster.shutdown();} |
| } |
| } |
| } |