HDFS-5406. Add file missed in previous commit.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1551110 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Arpit Agarwal
parent
938565925a
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121137789c
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs.server.datanode;
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import static org.apache.hadoop.test.MetricsAsserts.assertCounter;
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import static org.apache.hadoop.test.MetricsAsserts.getLongCounter;
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import static org.apache.hadoop.test.MetricsAsserts.getMetrics;
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import static org.hamcrest.core.Is.is;
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import static org.junit.Assert.assertThat;
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import static org.junit.Assert.assertTrue;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.commons.logging.impl.Log4JLogger;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.hdfs.DFSClient;
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import org.apache.hadoop.hdfs.DFSTestUtil;
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import org.apache.hadoop.hdfs.DistributedFileSystem;
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import org.apache.hadoop.hdfs.MiniDFSCluster;
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import org.apache.hadoop.hdfs.protocol.*;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
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import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
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import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
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import org.apache.hadoop.hdfs.server.namenode.NameNode;
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import org.apache.hadoop.hdfs.server.protocol.*;
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import org.apache.hadoop.test.GenericTestUtils;
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import org.apache.log4j.Level;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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/**
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* This test verifies that incremental block reports from a single DataNode are
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* correctly handled by NN. Tests the following variations:
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* #1 - Incremental BRs from all storages combined in a single call.
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* #2 - Incremental BRs from separate storages sent in separate calls.
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*
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* We also verify that the DataNode is not splitting the reports (it may do so
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* in the future).
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*/
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public class TestIncrementalBrVariations {
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public static final Log LOG = LogFactory.getLog(TestIncrementalBrVariations.class);
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private static short NUM_DATANODES = 1;
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static final int BLOCK_SIZE = 1024;
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static final int NUM_BLOCKS = 10;
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private static final long seed = 0xFACEFEEDL;
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private static final String NN_METRICS = "NameNodeActivity";
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private MiniDFSCluster cluster;
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private DistributedFileSystem fs;
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private DFSClient client;
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private static Configuration conf;
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static {
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((Log4JLogger) NameNode.stateChangeLog).getLogger().setLevel(Level.ALL);
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((Log4JLogger) BlockManager.blockLog).getLogger().setLevel(Level.ALL);
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((Log4JLogger) NameNode.blockStateChangeLog).getLogger().setLevel(Level.ALL);
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((Log4JLogger) LogFactory.getLog(FSNamesystem.class)).getLogger().setLevel(Level.ALL);
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((Log4JLogger) DataNode.LOG).getLogger().setLevel(Level.ALL);
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((Log4JLogger) TestIncrementalBrVariations.LOG).getLogger().setLevel(Level.ALL);
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}
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@Before
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public void startUpCluster() throws IOException {
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conf = new Configuration();
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cluster = new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DATANODES).build();
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fs = cluster.getFileSystem();
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client = new DFSClient(new InetSocketAddress("localhost", cluster.getNameNodePort()),
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cluster.getConfiguration(0));
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}
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@After
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public void shutDownCluster() throws IOException {
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client.close();
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fs.close();
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cluster.shutdownDataNodes();
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cluster.shutdown();
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}
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/**
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* Incremental BRs from all storages combined in a single message.
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*/
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@Test
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public void testCombinedIncrementalBlockReport() throws IOException {
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verifyIncrementalBlockReports(false);
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}
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/**
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* One incremental BR per storage.
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*/
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@Test
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public void testSplitIncrementalBlockReport() throws IOException {
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verifyIncrementalBlockReports(true);
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}
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private LocatedBlocks createFileGetBlocks(String filenamePrefix) throws IOException {
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Path filePath = new Path("/" + filenamePrefix + ".dat");
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// Write out a file with a few blocks, get block locations.
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DFSTestUtil.createFile(fs, filePath, BLOCK_SIZE, BLOCK_SIZE * NUM_BLOCKS,
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BLOCK_SIZE, NUM_DATANODES, seed);
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// Get the block list for the file with the block locations.
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LocatedBlocks blocks = client.getLocatedBlocks(
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filePath.toString(), 0, BLOCK_SIZE * NUM_BLOCKS);
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assertThat(cluster.getNamesystem().getUnderReplicatedBlocks(), is(0L));
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return blocks;
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}
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public void verifyIncrementalBlockReports(boolean splitReports) throws IOException {
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// Get the block list for the file with the block locations.
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LocatedBlocks blocks = createFileGetBlocks(GenericTestUtils.getMethodName());
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// A blocks belong to the same file, hence same BP
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DataNode dn = cluster.getDataNodes().get(0);
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String poolId = cluster.getNamesystem().getBlockPoolId();
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DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
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// We will send 'fake' incremental block reports to the NN that look
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// like they originated from DN 0.
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StorageReceivedDeletedBlocks reports[] =
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new StorageReceivedDeletedBlocks[dn.getFSDataset().getVolumes().size()];
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// Lie to the NN that one block on each storage has been deleted.
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for (int i = 0; i < reports.length; ++i) {
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FsVolumeSpi volume = dn.getFSDataset().getVolumes().get(i);
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boolean foundBlockOnStorage = false;
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ReceivedDeletedBlockInfo rdbi[] = new ReceivedDeletedBlockInfo[1];
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// Find the first block on this storage and mark it as deleted for the
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// report.
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for (LocatedBlock block : blocks.getLocatedBlocks()) {
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if (block.getStorageIDs()[0].equals(volume.getStorageID())) {
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rdbi[0] = new ReceivedDeletedBlockInfo(block.getBlock().getLocalBlock(),
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ReceivedDeletedBlockInfo.BlockStatus.DELETED_BLOCK, null);
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foundBlockOnStorage = true;
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break;
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}
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}
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assertTrue(foundBlockOnStorage);
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reports[i] = new StorageReceivedDeletedBlocks(volume.getStorageID(), rdbi);
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if (splitReports) {
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// If we are splitting reports then send the report for this storage now.
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StorageReceivedDeletedBlocks singletonReport[] = { reports[i] };
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cluster.getNameNodeRpc().blockReceivedAndDeleted(dnR, poolId, singletonReport);
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}
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}
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if (!splitReports) {
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// Send a combined report.
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cluster.getNameNodeRpc().blockReceivedAndDeleted(dnR, poolId, reports);
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}
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// Make sure that the deleted block from each storage was picked up
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// by the NameNode.
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assertThat(cluster.getNamesystem().getMissingBlocksCount(), is((long) reports.length));
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}
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/**
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* Verify that the DataNode sends a single incremental block report for all
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* storages.
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* @throws IOException
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* @throws InterruptedException
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*/
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@Test (timeout=60000)
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public void testDataNodeDoesNotSplitReports()
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throws IOException, InterruptedException {
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LocatedBlocks blocks = createFileGetBlocks(GenericTestUtils.getMethodName());
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assertThat(cluster.getDataNodes().size(), is(1));
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DataNode dn = cluster.getDataNodes().get(0);
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// Remove all blocks from the DataNode.
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for (LocatedBlock block : blocks.getLocatedBlocks()) {
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dn.notifyNamenodeDeletedBlock(
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block.getBlock(), block.getStorageIDs()[0]);
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}
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LOG.info("Triggering report after deleting blocks");
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long ops = getLongCounter("BlockReceivedAndDeletedOps", getMetrics(NN_METRICS));
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// Trigger a report to the NameNode and give it a few seconds.
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DataNodeTestUtils.triggerBlockReport(dn);
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Thread.sleep(5000);
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// Ensure that NameNodeRpcServer.blockReceivedAndDeletes is invoked
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// exactly once after we triggered the report.
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assertCounter("BlockReceivedAndDeletedOps", ops+1, getMetrics(NN_METRICS));
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}
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}
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