| /** |
| * 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 static org.apache.hadoop.test.MetricsAsserts.assertCounter; |
| import static org.apache.hadoop.test.MetricsAsserts.getMetrics; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.StorageType; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DFSOutputStream; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.protocol.ExtendedBlock; |
| import org.apache.hadoop.hdfs.server.datanode.fsdataset.DataNodeVolumeMetrics; |
| import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi; |
| import org.apache.hadoop.metrics2.MetricsRecordBuilder; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.Timeout; |
| |
| /** |
| * Test class for DataNodeVolumeMetrics. |
| */ |
| public class TestDataNodeVolumeMetrics { |
| private static final Log LOG = |
| LogFactory.getLog(TestDataNodeVolumeMetrics.class); |
| |
| private static final int BLOCK_SIZE = 1024; |
| private static final short REPL = 1; |
| private static final int NUM_DATANODES = 1; |
| |
| @Rule |
| public Timeout timeout = new Timeout(300000); |
| |
| @Test |
| public void testVolumeMetrics() throws Exception { |
| MiniDFSCluster cluster = setupClusterForVolumeMetrics(); |
| try { |
| FileSystem fs = cluster.getFileSystem(); |
| final Path fileName = new Path("/test.dat"); |
| final long fileLen = Integer.MAX_VALUE + 1L; |
| DFSTestUtil.createFile(fs, fileName, false, BLOCK_SIZE, fileLen, |
| fs.getDefaultBlockSize(fileName), |
| REPL, 1L, true); |
| |
| try (FSDataOutputStream out = fs.append(fileName)) { |
| out.writeBytes("hello world"); |
| ((DFSOutputStream) out.getWrappedStream()).hsync(); |
| } |
| |
| verifyDataNodeVolumeMetrics(fs, cluster, fileName); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| @Test |
| public void testVolumeMetricsWithVolumeDepartureArrival() throws Exception { |
| MiniDFSCluster cluster = setupClusterForVolumeMetrics(); |
| try { |
| FileSystem fs = cluster.getFileSystem(); |
| final Path fileName = new Path("/test.dat"); |
| final long fileLen = Integer.MAX_VALUE + 1L; |
| DFSTestUtil.createFile(fs, fileName, false, BLOCK_SIZE, fileLen, |
| fs.getDefaultBlockSize(fileName), |
| REPL, 1L, true); |
| |
| try (FSDataOutputStream out = fs.append(fileName)) { |
| out.writeBytes("hello world"); |
| ((DFSOutputStream) out.getWrappedStream()).hsync(); |
| } |
| |
| ArrayList<DataNode> dns = cluster.getDataNodes(); |
| assertTrue("DN1 should be up", dns.get(0).isDatanodeUp()); |
| |
| final String dataDir = cluster.getDataDirectory(); |
| final File dn1Vol2 = new File(dataDir, "data2"); |
| |
| DataNodeTestUtils.injectDataDirFailure(dn1Vol2); |
| verifyDataNodeVolumeMetrics(fs, cluster, fileName); |
| |
| DataNodeTestUtils.restoreDataDirFromFailure(dn1Vol2); |
| DataNodeTestUtils.reconfigureDataNode(dns.get(0), dn1Vol2); |
| verifyDataNodeVolumeMetrics(fs, cluster, fileName); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| private MiniDFSCluster setupClusterForVolumeMetrics() throws IOException { |
| Configuration conf = new HdfsConfiguration(); |
| conf.setInt(DFSConfigKeys |
| .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_PERCENTAGE_KEY, 100); |
| SimulatedFSDataset.setFactory(conf); |
| return new MiniDFSCluster.Builder(conf) |
| .numDataNodes(NUM_DATANODES) |
| .storageTypes(new StorageType[]{StorageType.RAM_DISK, StorageType.DISK}) |
| .storagesPerDatanode(2) |
| .build(); |
| } |
| |
| private void verifyDataNodeVolumeMetrics(final FileSystem fs, |
| final MiniDFSCluster cluster, final Path fileName) throws IOException { |
| List<DataNode> datanodes = cluster.getDataNodes(); |
| DataNode datanode = datanodes.get(0); |
| |
| final ExtendedBlock block = DFSTestUtil.getFirstBlock(fs, fileName); |
| final FsVolumeSpi volume = datanode.getFSDataset().getVolume(block); |
| DataNodeVolumeMetrics metrics = volume.getMetrics(); |
| |
| MetricsRecordBuilder rb = getMetrics(volume.getMetrics().name()); |
| assertCounter("TotalDataFileIos", metrics.getTotalDataFileIos(), rb); |
| |
| LOG.info("TotalMetadataOperations : " + |
| metrics.getTotalMetadataOperations()); |
| LOG.info("TotalDataFileIos : " + metrics.getTotalDataFileIos()); |
| LOG.info("TotalFileIoErrors : " + metrics.getTotalFileIoErrors()); |
| |
| LOG.info("MetadataOperationSampleCount : " + |
| metrics.getMetadataOperationSampleCount()); |
| LOG.info("MetadataOperationMean : " + metrics.getMetadataOperationMean()); |
| LOG.info("MetadataFileIoStdDev : " + |
| metrics.getMetadataOperationStdDev()); |
| |
| LOG.info("DataFileIoSampleCount : " + metrics.getDataFileIoSampleCount()); |
| LOG.info("DataFileIoMean : " + metrics.getDataFileIoMean()); |
| LOG.info("DataFileIoStdDev : " + metrics.getDataFileIoStdDev()); |
| |
| LOG.info("flushIoSampleCount : " + metrics.getFlushIoSampleCount()); |
| LOG.info("flushIoMean : " + metrics.getFlushIoMean()); |
| LOG.info("flushIoStdDev : " + metrics.getFlushIoStdDev()); |
| |
| LOG.info("syncIoSampleCount : " + metrics.getSyncIoSampleCount()); |
| LOG.info("syncIoMean : " + metrics.getSyncIoMean()); |
| LOG.info("syncIoStdDev : " + metrics.getSyncIoStdDev()); |
| |
| LOG.info("readIoSampleCount : " + metrics.getReadIoMean()); |
| LOG.info("readIoMean : " + metrics.getReadIoMean()); |
| LOG.info("readIoStdDev : " + metrics.getReadIoStdDev()); |
| |
| LOG.info("writeIoSampleCount : " + metrics.getWriteIoSampleCount()); |
| LOG.info("writeIoMean : " + metrics.getWriteIoMean()); |
| LOG.info("writeIoStdDev : " + metrics.getWriteIoStdDev()); |
| |
| LOG.info("fileIoErrorSampleCount : " |
| + metrics.getFileIoErrorSampleCount()); |
| LOG.info("fileIoErrorMean : " + metrics.getFileIoErrorMean()); |
| LOG.info("fileIoErrorStdDev : " + metrics.getFileIoErrorStdDev()); |
| } |
| } |