| /** |
| * 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.metrics; |
| |
| import java.io.IOException; |
| import java.util.Random; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.DistributedFileSystem; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.server.namenode.NameNode; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| |
| /** |
| * Test case for FilesInGetListingOps metric in Namenode |
| */ |
| public class TestNNMetricFilesInGetListingOps extends TestCase { |
| private static final Configuration CONF = new HdfsConfiguration(); |
| static { |
| CONF.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 100); |
| CONF.setInt(DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY, 1); |
| CONF.setLong("dfs.heartbeat.interval", 1L); |
| CONF.setInt(DFSConfigKeys.DFS_NAMENODE_REPLICATION_INTERVAL_KEY, 1); |
| } |
| |
| private MiniDFSCluster cluster; |
| private NameNodeMetrics nnMetrics; |
| private DistributedFileSystem fs; |
| private Random rand = new Random(); |
| |
| @Override |
| protected void setUp() throws Exception { |
| cluster = new MiniDFSCluster(CONF, 1, true, null); |
| cluster.waitActive(); |
| cluster.getNameNode(); |
| nnMetrics = NameNode.getNameNodeMetrics(); |
| fs = (DistributedFileSystem) cluster.getFileSystem(); |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| cluster.shutdown(); |
| } |
| |
| /** create a file with a length of <code>fileLen</code> */ |
| private void createFile(String fileName, long fileLen, short replicas) throws IOException { |
| Path filePath = new Path(fileName); |
| DFSTestUtil.createFile(fs, filePath, fileLen, replicas, rand.nextLong()); |
| } |
| |
| |
| public void testFilesInGetListingOps() throws Exception { |
| createFile("/tmp1/t1", 3200, (short)3); |
| createFile("/tmp1/t2", 3200, (short)3); |
| createFile("/tmp2/t1", 3200, (short)3); |
| createFile("/tmp2/t2", 3200, (short)3); |
| cluster.getNameNode().getListing("/tmp1") ; |
| assertEquals(2,nnMetrics.numFilesInGetListingOps.getCurrentIntervalValue()); |
| cluster.getNameNode().getListing("/tmp2") ; |
| assertEquals(4,nnMetrics.numFilesInGetListingOps.getCurrentIntervalValue()); |
| } |
| } |
| |