| /** |
| * 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.namenode; |
| |
| import java.lang.management.ManagementFactory; |
| |
| import javax.management.MBeanServer; |
| import javax.management.ObjectName; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.server.namenode.FSNamesystem; |
| import org.apache.hadoop.util.VersionInfo; |
| |
| import org.junit.Test; |
| import junit.framework.Assert; |
| |
| /** |
| * Class for testing {@link NameNodeMXBean} implementation |
| */ |
| public class TestNameNodeMXBean { |
| @Test |
| public void testNameNodeMXBeanInfo() throws Exception { |
| Configuration conf = new Configuration(); |
| MiniDFSCluster cluster = null; |
| |
| try { |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| cluster.waitActive(); |
| |
| FSNamesystem fsn = cluster.getNameNode().namesystem; |
| |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName mxbeanName = new ObjectName( |
| "Hadoop:service=NameNode,name=NameNodeInfo"); |
| // get attribute "ClusterId" |
| String clusterId = (String) mbs.getAttribute(mxbeanName, "ClusterId"); |
| Assert.assertEquals(fsn.getClusterId(), clusterId); |
| // get attribute "BlockPoolId" |
| String blockpoolId = (String) mbs.getAttribute(mxbeanName, |
| "BlockPoolId"); |
| Assert.assertEquals(fsn.getBlockPoolId(), blockpoolId); |
| // get attribute "Version" |
| String version = (String) mbs.getAttribute(mxbeanName, "Version"); |
| Assert.assertEquals(fsn.getVersion(), version); |
| Assert.assertTrue(version.equals(VersionInfo.getVersion() |
| + ", r" + VersionInfo.getRevision())); |
| // get attribute "Used" |
| Long used = (Long) mbs.getAttribute(mxbeanName, "Used"); |
| Assert.assertEquals(fsn.getUsed(), used.longValue()); |
| // get attribute "Total" |
| Long total = (Long) mbs.getAttribute(mxbeanName, "Total"); |
| Assert.assertEquals(fsn.getTotal(), total.longValue()); |
| // get attribute "safemode" |
| String safemode = (String) mbs.getAttribute(mxbeanName, "Safemode"); |
| Assert.assertEquals(fsn.getSafemode(), safemode); |
| // get attribute nondfs |
| Long nondfs = (Long) (mbs.getAttribute(mxbeanName, "NonDfsUsedSpace")); |
| Assert.assertEquals(fsn.getNonDfsUsedSpace(), nondfs.longValue()); |
| // get attribute percentremaining |
| Float percentremaining = (Float) (mbs.getAttribute(mxbeanName, |
| "PercentRemaining")); |
| Assert.assertEquals(fsn.getPercentRemaining(), percentremaining |
| .floatValue()); |
| // get attribute Totalblocks |
| Long totalblocks = (Long) (mbs.getAttribute(mxbeanName, "TotalBlocks")); |
| Assert.assertEquals(fsn.getTotalBlocks(), totalblocks.longValue()); |
| // get attribute alivenodeinfo |
| String alivenodeinfo = (String) (mbs.getAttribute(mxbeanName, |
| "LiveNodes")); |
| Assert.assertEquals(fsn.getLiveNodes(), alivenodeinfo); |
| // get attribute deadnodeinfo |
| String deadnodeinfo = (String) (mbs.getAttribute(mxbeanName, |
| "DeadNodes")); |
| Assert.assertEquals(fsn.getDeadNodes(), deadnodeinfo); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| } |