| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.fsdataset.impl; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CachingGetSpaceUsed; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.DFSInputStream; |
| import org.apache.hadoop.hdfs.DistributedFileSystem; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.protocol.ExtendedBlock; |
| import org.apache.hadoop.hdfs.protocol.LocatedBlock; |
| import org.apache.hadoop.hdfs.server.datanode.DataNode; |
| import org.apache.hadoop.io.IOUtils; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.List; |
| |
| import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.FS_DU_INTERVAL_KEY; |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * Unit test for ReplicaCachingGetSpaceUsed class. |
| */ |
| public class TestReplicaCachingGetSpaceUsed { |
| private Configuration conf = null; |
| private MiniDFSCluster cluster; |
| private DistributedFileSystem fs; |
| private DataNode dataNode; |
| |
| @Before |
| public void setUp() |
| throws IOException, NoSuchMethodException, InterruptedException { |
| conf = new Configuration(); |
| conf.setClass("fs.getspaceused.classname", ReplicaCachingGetSpaceUsed.class, |
| CachingGetSpaceUsed.class); |
| conf.setLong(FS_DU_INTERVAL_KEY, 1000); |
| conf.setLong("fs.getspaceused.jitterMillis", 0); |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| cluster.waitActive(); |
| dataNode = cluster.getDataNodes().get(0); |
| |
| fs = cluster.getFileSystem(); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| |
| @Test |
| public void testReplicaCachingGetSpaceUsedByFINALIZEDReplica() |
| throws Exception { |
| FSDataOutputStream os = fs |
| .create(new Path("/testReplicaCachingGetSpaceUsedByFINALIZEDReplica")); |
| byte[] bytes = new byte[20480]; |
| InputStream is = new ByteArrayInputStream(bytes); |
| IOUtils.copyBytes(is, os, bytes.length); |
| os.hsync(); |
| os.close(); |
| |
| DFSInputStream dfsInputStream = fs.getClient() |
| .open("/testReplicaCachingGetSpaceUsedByFINALIZEDReplica"); |
| long blockLength = 0; |
| long metaLength = 0; |
| List<LocatedBlock> locatedBlocks = dfsInputStream.getAllBlocks(); |
| for (LocatedBlock locatedBlock : locatedBlocks) { |
| ExtendedBlock extendedBlock = locatedBlock.getBlock(); |
| blockLength += extendedBlock.getLocalBlock().getNumBytes(); |
| metaLength += dataNode.getFSDataset() |
| .getMetaDataInputStream(extendedBlock).getLength(); |
| } |
| |
| // Guarantee ReplicaCachingGetSpaceUsed#refresh() is called after replica |
| // has been written to disk. |
| Thread.sleep(2000); |
| assertEquals(blockLength + metaLength, |
| dataNode.getFSDataset().getDfsUsed()); |
| |
| fs.delete(new Path("/testReplicaCachingGetSpaceUsedByFINALIZEDReplica"), |
| true); |
| } |
| |
| @Test |
| public void testReplicaCachingGetSpaceUsedByRBWReplica() throws Exception { |
| FSDataOutputStream os = |
| fs.create(new Path("/testReplicaCachingGetSpaceUsedByRBWReplica")); |
| byte[] bytes = new byte[20480]; |
| InputStream is = new ByteArrayInputStream(bytes); |
| IOUtils.copyBytes(is, os, bytes.length); |
| os.hsync(); |
| |
| DFSInputStream dfsInputStream = |
| fs.getClient().open("/testReplicaCachingGetSpaceUsedByRBWReplica"); |
| long blockLength = 0; |
| long metaLength = 0; |
| List<LocatedBlock> locatedBlocks = dfsInputStream.getAllBlocks(); |
| for (LocatedBlock locatedBlock : locatedBlocks) { |
| ExtendedBlock extendedBlock = locatedBlock.getBlock(); |
| blockLength += extendedBlock.getLocalBlock().getNumBytes(); |
| metaLength += dataNode.getFSDataset() |
| .getMetaDataInputStream(extendedBlock).getLength(); |
| } |
| |
| // Guarantee ReplicaCachingGetSpaceUsed#refresh() is called after replica |
| // has been written to disk. |
| Thread.sleep(2000); |
| assertEquals(blockLength + metaLength, |
| dataNode.getFSDataset().getDfsUsed()); |
| |
| os.close(); |
| |
| // Guarantee ReplicaCachingGetSpaceUsed#refresh() is called, dfsspaceused is |
| // recalculated |
| Thread.sleep(2000); |
| // After close operation, the replica state will be transformed from RBW to |
| // finalized. But the space used of these replicas are all included and the |
| // dfsUsed value should be same. |
| assertEquals(blockLength + metaLength, |
| dataNode.getFSDataset().getDfsUsed()); |
| |
| fs.delete(new Path("/testReplicaCachingGetSpaceUsedByRBWReplica"), true); |
| } |
| } |