/**
* 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.raid;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.net.URI;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.zip.CRC32;
import junit.framework.TestCase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.RaidDFSUtil;
import org.apache.hadoop.hdfs.TestDatanodeBlockScanner;
import org.apache.hadoop.hdfs.TestRaidDfs;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.mapred.MiniMRCluster;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.raid.DistBlockIntegrityMonitor.Priority;
import org.apache.hadoop.raid.DistBlockIntegrityMonitor.Worker.LostFileInfo;
import org.apache.hadoop.util.StringUtils;
import org.junit.Test;
public class TestDirectoryBlockFixer extends TestCase {
final static Log LOG = LogFactory.getLog(
"org.apache.hadoop.raid.TestDirectoryBlockFixer");
final static String TEST_DIR = new File(System.getProperty("test.build.data",
"build/contrib/raid/test/data")).getAbsolutePath();
final static String CONFIG_FILE = new File(TEST_DIR,
"test-raid.xml").getAbsolutePath();
final static long RELOAD_INTERVAL = 1000;
final static int NUM_DATANODES = 3;
final long blockSize = 8192L;
final long[] fileSizes =
new long[]{blockSize + blockSize/2, // block 0, 1
3*blockSize, // block 2, 3
blockSize + blockSize/2 + 1}; // block 4, 5, 6, 7
final long[] blockSizes = new long[]{blockSize, 2*blockSize, blockSize/2};
final Integer[] rsCorruptFileIdx1 = new Integer[]{0, 1, 2, 3, 5, 6, 7};
final int[] rsNumCorruptBlocksInFiles1 = new int[] {2, 2, 3};
final Integer[] rsCorruptFileIdx2 = new Integer[]{1, 2, 3, 4, 5, 6};
final int[] rsNumCorruptBlocksInFiles2 = new int[] {1, 2, 3};
Configuration conf;
String namenode = null;
MiniDFSCluster dfsCluster = null;
String hftp = null;
MiniMRCluster mr = null;
FileSystem fileSys = null;
RaidNode cnode = null;
String jobTrackerName = null;
Random rand = new Random();
static {
ParityFilePair.disableCacheUsedInTestOnly();
}
public Configuration getRaidNodeConfig(Configuration conf, boolean local) {
// create an instance of the RaidNode
Configuration localConf = new Configuration(conf);
localConf.setInt("raid.blockfix.interval", 1000);
if (local) {
localConf.set("raid.blockfix.classname",
"org.apache.hadoop.raid.LocalBlockIntegrityMonitor");
} else {
localConf.set("raid.blockfix.classname",
"org.apache.hadoop.raid.DistBlockIntegrityMonitor");
}
localConf.setLong("raid.blockfix.filespertask", 2L);
return localConf;
}
@Test
public void testDirectoryFilterUnfixableFiles() throws IOException {
conf = new Configuration();
dfsCluster = new MiniDFSCluster(conf, NUM_DATANODES, true, null);
dfsCluster.waitActive();
FileSystem fs = dfsCluster.getFileSystem();
Utils.loadTestCodecs(conf, 3, 5, 1,
3, "/destraid", "/destraidrs", false, true);
try {
Configuration testConf = fs.getConf();
BlockIntegrityMonitor blockFixer = new
LocalBlockIntegrityMonitor(testConf);
String p1 = "/user/foo/f1";
String p2 = "/user/foo/f2";
String p3 = "/user1/foo/bar/f1";
String p4 = "/a/b";
String p5 = "/c";
String p6 = "/destraidrs/user";
String p7 = "/destraid/user1/foo";
fs.mkdirs(new Path(p6));
List<String> fileList = new ArrayList<String>();
fileList.add(p1);
fileList.add(p2);
fileList.add(p3);
fileList.add(p4);
fileList.add(p5);
blockFixer.filterUnreconstructableSourceFiles(fs, fileList.iterator());
// p3 and p5 should be filtered out.
assertEquals(3, fileList.size());
Set<String> filtered = new HashSet<String>();
for (String p: fileList) filtered.add(p);
assertFalse("File not filtered", filtered.contains(p3));
assertFalse("File not filtered", filtered.contains(p5));
fileList.add(p3);
fs.mkdirs(new Path(p7));
blockFixer.filterUnreconstructableSourceFiles(fs, fileList.iterator());
// Nothing is filtered.
assertEquals(4, fileList.size());
} finally {
dfsCluster.shutdown();
}
}
@Test
public void testDirBlockFixLocal() throws Exception {
implDirBlockFix(true);
}
@Test
public void testDirBlockFixDist() throws Exception {
implDirBlockFix(false);
}
/**
* Create a file with three stripes, corrupt a block each in two stripes,
* and wait for the the file to be fixed.
*/
private void implDirBlockFix(boolean local) throws Exception {
LOG.info("Test testDirBlockFix started.");
int stripeLength = 3;
mySetup(stripeLength);
long[] crcs = new long[3];
int[] seeds = new int[3];
Path dirPath = new Path("/user/dhruba/raidtestrs");
Path[] files = TestRaidDfs.createTestFiles(dirPath,
fileSizes, blockSizes, crcs, seeds, fileSys, (short)1);
Path destPath = new Path("/destraidrs/user/dhruba");
LOG.info("Test testDirBlockFix created test files");
Configuration localConf = this.getRaidNodeConfig(conf, local);
try {
cnode = RaidNode.createRaidNode(null, localConf);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath, destPath);
cnode.stop(); cnode.join();
DistributedFileSystem dfs = (DistributedFileSystem)fileSys;
String[] corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("no corrupt files expected", 0, corruptFiles.length);
assertEquals("filesFixed() should return 0 before fixing files",
0, cnode.blockIntegrityMonitor.getNumFilesFixed());
this.corruptFiles(dirPath, crcs, rsCorruptFileIdx1, dfs, files,
rsNumCorruptBlocksInFiles1);
cnode = RaidNode.createRaidNode(null, localConf);
long start = System.currentTimeMillis();
while (cnode.blockIntegrityMonitor.getNumFilesFixed() < 3 &&
System.currentTimeMillis() - start < 120000) {
LOG.info("Test testDirBlockFix waiting for files to be fixed.");
Thread.sleep(1000);
}
assertEquals("file not fixed", 3,
cnode.blockIntegrityMonitor.getNumFilesFixed());
dfs = getDFS(conf, dfs);
for (int i = 0; i < fileSizes.length; i++) {
assertTrue("file " + files[i] + " not fixed",
TestRaidDfs.validateFile(dfs, files[i], fileSizes[i],
crcs[i]));
}
} catch (Exception e) {
LOG.info("Test testDirBlockFix Exception " + e, e);
throw e;
} finally {
myTearDown();
}
LOG.info("Test testDirBlockFix completed.");
}
/**
* Tests integrity of generated block.
* Create a file and delete a block entirely. Wait for the block to be
* regenerated. Now stop RaidNode and corrupt the generated block.
* Test that corruption in the generated block can be detected by clients.
*/
private void generatedBlockTestCommon(String testName, int blockToCorrupt,
boolean local) throws Exception {
LOG.info("Test " + testName + " started.");
int stripeLength = 3;
mySetup(stripeLength);
long[] crcs = new long[3];
int[] seeds = new int[3];
Path dirPath = new Path("/user/dhruba/raidtest");
Path[] files = TestRaidDfs.createTestFiles(dirPath,
fileSizes, blockSizes, crcs, seeds, fileSys, (short)1);
Path destPath = new Path("/destraid/user/dhruba");
LOG.info("Test " + testName + " created test files");
Configuration localConf = this.getRaidNodeConfig(conf, local);
try {
cnode = RaidNode.createRaidNode(null, localConf);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath, destPath);
cnode.stop(); cnode.join();
DistributedFileSystem dfs = (DistributedFileSystem)fileSys;
String[] corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("no corrupt files expected", 0, corruptFiles.length);
assertEquals("filesFixed() should return 0 before fixing files",
0, cnode.blockIntegrityMonitor.getNumFilesFixed());
Integer[] corruptBlockIdxs = new Integer[]{blockToCorrupt};
TestDirectoryRaidDfs.corruptBlocksInDirectory(conf, dirPath,
crcs, corruptBlockIdxs, fileSys, dfsCluster, false, true);
corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("files not corrupted", corruptBlockIdxs.length,
corruptFiles.length);
int corruptFileIdx = -1;
for (int i = 0; i < files.length; i++) {
if (files[i].toUri().getPath().equals(corruptFiles[0])) {
corruptFileIdx = i;
break;
}
}
assertNotSame("Wrong corrupt file", -1, corruptFileIdx);
cnode = RaidNode.createRaidNode(null, localConf);
long start = System.currentTimeMillis();
while (cnode.blockIntegrityMonitor.getNumFilesFixed() < 1 &&
System.currentTimeMillis() - start < 120000) {
LOG.info("Test testDirBlockFix waiting for files to be fixed.");
Thread.sleep(1000);
}
assertEquals("file not fixed", 1,
cnode.blockIntegrityMonitor.getNumFilesFixed());
// Stop RaidNode
cnode.stop(); cnode.join(); cnode = null;
// The block has successfully been reconstructed.
dfs = getDFS(conf, dfs);
assertTrue("file not fixed",
TestRaidDfs.validateFile(dfs, files[corruptFileIdx],
fileSizes[corruptFileIdx], crcs[corruptFileIdx]));
// Now corrupt the generated block.
TestDirectoryRaidDfs.corruptBlocksInDirectory(conf, dirPath,
crcs, corruptBlockIdxs, dfs, dfsCluster, false, false);
try {
TestRaidDfs.validateFile(dfs, files[corruptFileIdx],
fileSizes[corruptFileIdx], crcs[corruptFileIdx]);
fail("Expected exception not thrown");
} catch (org.apache.hadoop.fs.ChecksumException ce) {
} catch (org.apache.hadoop.fs.BlockMissingException bme) {
}
} catch (Exception e) {
LOG.info("Test " + testName + " Exception " + e, e);
throw e;
} finally {
myTearDown();
}
LOG.info("Test " + testName + " completed.");
}
/**
* Tests integrity of generated block.
* Create a file and delete a block entirely. Wait for the block to be
* regenerated. Now stop RaidNode and corrupt the generated block.
* Test that corruption in the generated block can be detected by clients.
*/
@Test
public void testGeneratedBlockLocal() throws Exception {
generatedBlockTestCommon("testGeneratedBlock", 2, true);
}
/**
* Tests integrity of generated block.
* Create a file and delete a block entirely. Wait for the block to be
* regenerated. Now stop RaidNode and corrupt the generated block.
* Test that corruption in the generated block can be detected by clients.
*/
@Test
public void testGeneratedBlockDist() throws Exception {
generatedBlockTestCommon("testGeneratedBlock", 2, false);
}
/**
* Tests integrity of generated last block.
* Create a file and delete a block entirely. Wait for the block to be
* regenerated. Now stop RaidNode and corrupt the generated block.
* Test that corruption in the generated block can be detected by clients.
*/
@Test
public void testGeneratedLastBlockLocal() throws Exception {
generatedBlockTestCommon("testGeneratedLastBlock", -1, true);
}
/**
* Tests integrity of generated last block.
* Create a file and delete a block entirely. Wait for the block to be
* regenerated. Now stop RaidNode and corrupt the generated block.
* Test that corruption in the generated block can be detected by clients.
*/
@Test
public void testGeneratedLastBlockDist() throws Exception {
generatedBlockTestCommon("testGeneratedLastBlock", -1, false);
}
@Test
public void testParityBlockFixLocal() throws Exception {
implParityBlockFix("testParityBlockFixLocal", true);
}
@Test
public void testParityBlockFixDist() throws Exception {
implParityBlockFix("testParityBlockFixDist", false);
}
/**
* Corrupt a parity file and wait for it to get fixed.
*/
private void implParityBlockFix(String testName, boolean local)
throws Exception {
LOG.info("Test " + testName + " started.");
int stripeLength = 3;
mySetup(stripeLength);
long[] crcs = new long[3];
int[] seeds = new int[3];
Path dirPath = new Path("/user/dhruba/raidtest");
Path[] files = TestRaidDfs.createTestFiles(dirPath,
fileSizes, blockSizes, crcs, seeds, fileSys, (short)1);
Path destPath = new Path("/destraid/user/dhruba");
Path parityFile = new Path("/destraid/user/dhruba/raidtest");
LOG.info("Test " + testName + " created test files");
Configuration localConf = this.getRaidNodeConfig(conf, local);
try {
cnode = RaidNode.createRaidNode(null, localConf);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath, destPath);
cnode.stop(); cnode.join();
long parityCRC = RaidDFSUtil.getCRC(fileSys, parityFile);
FileStatus parityStat = fileSys.getFileStatus(parityFile);
DistributedFileSystem dfs = (DistributedFileSystem)fileSys;
LocatedBlocks locs = RaidDFSUtil.getBlockLocations(
dfs, parityFile.toUri().getPath(), 0, parityStat.getLen());
String[] corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("no corrupt files expected", 0, corruptFiles.length);
assertEquals("filesFixed() should return 0 before fixing files",
0, cnode.blockIntegrityMonitor.getNumFilesFixed());
// Corrupt parity blocks for different stripes.
int[] corruptBlockIdxs = new int[]{0, 1, 2};
for (int idx: corruptBlockIdxs)
corruptBlock(locs.get(idx).getBlock().getBlockName(), dfsCluster);
RaidDFSUtil.reportCorruptBlocks(dfs, parityFile, corruptBlockIdxs,
2*blockSize);
corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("file not corrupted",
1, corruptFiles.length);
assertEquals("wrong file corrupted",
corruptFiles[0], parityFile.toUri().getPath());
cnode = RaidNode.createRaidNode(null, localConf);
long start = System.currentTimeMillis();
while (cnode.blockIntegrityMonitor.getNumFilesFixed() < 1 &&
System.currentTimeMillis() - start < 120000) {
LOG.info("Test " + testName + " waiting for files to be fixed.");
Thread.sleep(3000);
}
assertEquals("file not fixed",
1, cnode.blockIntegrityMonitor.getNumFilesFixed());
long checkCRC = RaidDFSUtil.getCRC(fileSys, parityFile);
assertEquals("file not fixed",
parityCRC, checkCRC);
} catch (Exception e) {
LOG.info("Test " + testName + " Exception " + e +
StringUtils.stringifyException(e));
throw e;
} finally {
myTearDown();
}
LOG.info("Test " + testName + " completed.");
}
private void corruptFiles(Path dirPath, long[] crcs,
Integer[] corruptBlockIdxs, DistributedFileSystem dfs,
Path[] files, int[] numCorruptBlocksInFiles) throws IOException {
int totalCorruptFiles = DFSUtil.getCorruptFiles(dfs).length;
TestDirectoryRaidDfs.corruptBlocksInDirectory(conf, dirPath,
crcs, corruptBlockIdxs, fileSys, dfsCluster, false, true);
String[] corruptFiles = DFSUtil.getCorruptFiles(dfs);
for (int i = 0; i < numCorruptBlocksInFiles.length; i++) {
if (numCorruptBlocksInFiles[i] > 0)
totalCorruptFiles++;
}
assertEquals("files not corrupted", totalCorruptFiles,
corruptFiles.length);
for (int i = 0; i< fileSizes.length; i++) {
assertEquals("wrong number of corrupt blocks for file " +
files[i], numCorruptBlocksInFiles[i],
RaidDFSUtil.corruptBlocksInFile(dfs,
files[i].toUri().getPath(), 0, fileSizes[i]).size());
}
}
/**
* tests that we can have 2 concurrent jobs fixing files
* (dist block fixer)
*/
@Test
public void testConcurrentJobs() throws Exception {
LOG.info("Test testConcurrentJobs started.");
int stripeLength = 3;
mySetup(stripeLength);
long[] crcs1 = new long[3];
int[] seeds1 = new int[3];
long[] crcs2 = new long[3];
int[] seeds2 = new int[3];
Path dirPath1 = new Path("/user/dhruba/raidtestrs/1");
Path[] files1 = TestRaidDfs.createTestFiles(dirPath1,
fileSizes, blockSizes, crcs1, seeds1, fileSys, (short)1);
Path dirPath2 = new Path("/user/dhruba/raidtestrs/2");
Path[] files2 = TestRaidDfs.createTestFiles(dirPath2,
fileSizes, blockSizes, crcs2, seeds2, fileSys, (short)1);
Path destPath = new Path("/destraidrs/user/dhruba/raidtestrs");
LOG.info("Test testConcurrentJobs created test files");
Configuration localConf = this.getRaidNodeConfig(conf, false);
try {
cnode = RaidNode.createRaidNode(null, localConf);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath1, destPath);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath2, destPath);
cnode.stop(); cnode.join();
DistributedFileSystem dfs = (DistributedFileSystem)fileSys;
String[] corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("no corrupt files expected", 0, corruptFiles.length);
assertEquals("filesFixed() should return 0 before fixing files",
0, cnode.blockIntegrityMonitor.getNumFilesFixed());
//corrupt directory 1
this.corruptFiles(dirPath1, crcs1, rsCorruptFileIdx1, dfs, files1,
rsNumCorruptBlocksInFiles1);
cnode = RaidNode.createRaidNode(null, localConf);
DistBlockIntegrityMonitor blockFixer =
(DistBlockIntegrityMonitor) cnode.blockIntegrityMonitor;
long start = System.currentTimeMillis();
// All files are HIGH-PRI corrupt files
while (blockFixer.jobsRunning() < 1 &&
System.currentTimeMillis() - start < 60000) {
LOG.info("Test testDirBlockFix waiting for fixing job 1 to start");
Thread.sleep(1000);
}
assertEquals("job 1 not running", 1, blockFixer.jobsRunning());
//Corrupt directory 2
this.corruptFiles(dirPath2, crcs2, rsCorruptFileIdx2, dfs, files2,
rsNumCorruptBlocksInFiles2);
// 1 LOW-PRI file and 2 HIGH-PRI files
while (blockFixer.jobsRunning() < 3 &&
System.currentTimeMillis() - start < 60000) {
LOG.info("Test testDirBlockFix waiting for fixing job 2 and 3 to start");
Thread.sleep(1000);
}
assertEquals("3 jobs are running", 3, blockFixer.jobsRunning());
while (blockFixer.getNumFilesFixed() < 6 &&
System.currentTimeMillis() - start < 240000) {
LOG.info("Test testDirBlockFix waiting for files to be fixed.");
Thread.sleep(1000);
}
assertEquals("files not fixed", 6, blockFixer.getNumFilesFixed());
dfs = getDFS(conf, dfs);
for (int i = 0; i < fileSizes.length; i++) {
assertTrue("file " + files1[i] + " not fixed",
TestRaidDfs.validateFile(dfs, files1[i], fileSizes[i], crcs1[i]));
}
for (int i = 0; i < fileSizes.length; i++) {
assertTrue("file " + files2[i] + " not fixed",
TestRaidDfs.validateFile(dfs, files2[i], fileSizes[i], crcs2[i]));
}
} catch (Exception e) {
LOG.info("Test testConcurrentJobs exception " + e, e);
throw e;
} finally {
myTearDown();
}
}
/**
* tests that the distributed block fixer obeys
* the limit on how many jobs to submit simultaneously.
*/
@Test
public void testMaxPendingJobs() throws Exception {
LOG.info("Test testMaxPendingJobs started.");
int stripeLength = 3;
mySetup(stripeLength);
long[] crcs1 = new long[3];
int[] seeds1 = new int[3];
long[] crcs2 = new long[3];
int[] seeds2 = new int[3];
Path dirPath1 = new Path("/user/dhruba/raidtestrs/1");
Path[] files1 = TestRaidDfs.createTestFiles(dirPath1,
fileSizes, blockSizes, crcs1, seeds1, fileSys, (short)1);
Path dirPath2 = new Path("/user/dhruba/raidtestrs/2");
Path[] files2 = TestRaidDfs.createTestFiles(dirPath2,
fileSizes, blockSizes, crcs2, seeds2, fileSys, (short)1);
Path destPath = new Path("/destraidrs/user/dhruba/raidtestrs");
LOG.info("Test testMaxPendingJobs created test files");
Configuration localConf = this.getRaidNodeConfig(conf, false);
localConf.setLong("raid.blockfix.maxpendingjobs", 1L);
try {
cnode = RaidNode.createRaidNode(null, localConf);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath1, destPath);
TestRaidDfs.waitForDirRaided(LOG, fileSys, dirPath2, destPath);
cnode.stop(); cnode.join();
DistributedFileSystem dfs = (DistributedFileSystem)fileSys;
String[] corruptFiles = DFSUtil.getCorruptFiles(dfs);
assertEquals("no corrupt files expected", 0, corruptFiles.length);
assertEquals("filesFixed() should return 0 before fixing files",
0, cnode.blockIntegrityMonitor.getNumFilesFixed());
//corrupt directory 1
this.corruptFiles(dirPath1, crcs1, rsCorruptFileIdx1, dfs, files1,
rsNumCorruptBlocksInFiles1);
cnode = RaidNode.createRaidNode(null, localConf);
DistBlockIntegrityMonitor blockFixer = (DistBlockIntegrityMonitor) cnode.blockIntegrityMonitor;
long start = System.currentTimeMillis();
while (blockFixer.jobsRunning() < 1 &&
System.currentTimeMillis() - start < 60000) {
LOG.info("Test testDirBlockFix waiting for fixing job 1 to start");
Thread.sleep(1000);
}
assertEquals("job not running", 1, blockFixer.jobsRunning());
//corrupt directory 2
this.corruptFiles(dirPath2, crcs2, rsCorruptFileIdx2, dfs, files2,
rsNumCorruptBlocksInFiles2);
// wait until both files are fixed
while (blockFixer.getNumFilesFixed() < 6 &&
System.currentTimeMillis() - start < 120000) {
// make sure the block fixer does not start a second job while
// the first one is still running
assertTrue("too many jobs running", blockFixer.jobsRunning() <= 1);
Thread.sleep(1000);
}
assertEquals("files not fixed", 6, blockFixer.getNumFilesFixed());
dfs = getDFS(conf, dfs);
for (int i = 0; i < fileSizes.length; i++) {
assertTrue("file " + files1[i] + " not fixed",
TestRaidDfs.validateFile(dfs, files1[i], fileSizes[i], crcs1[i]));
}
for (int i = 0; i < fileSizes.length; i++) {
assertTrue("file " + files2[i] + " not fixed",
TestRaidDfs.validateFile(dfs, files2[i], fileSizes[i], crcs2[i]));
}
} catch (Exception e) {
LOG.info("Test testMaxPendingJobs exception " + e +
StringUtils.stringifyException(e));
throw e;
} finally {
myTearDown();
}
}
static class FakeDistBlockIntegrityMonitor extends DistBlockIntegrityMonitor {
Map<String, List<String>> submittedJobs =
new HashMap<String, List<String>>();
FakeDistBlockIntegrityMonitor(Configuration conf) {
super(conf);
}
@Override
void submitJob(Job job, List<String> filesInJob, Priority priority,
Map<Job, List<LostFileInfo>> jobIndex) {
LOG.info("Job " + job.getJobName() + " was submitted ");
submittedJobs.put(job.getJobName(), filesInJob);
}
}
public void testMultiplePriorities() throws Exception {
long[] crcs = new long[3];
int[] seeds = new int[3];
Path dirPath = new Path("/home/test");
int stripeLength = 3;
short repl = 1;
mySetup(stripeLength);
Codec codec = Codec.getCodec("rs");
LOG.info("Starting testMultiplePriorities");
try {
// Create test file and raid it.
Path[] files = TestRaidDfs.createTestFiles(dirPath,
fileSizes, blockSizes, crcs, seeds, fileSys, (short)1);
FileStatus stat = fileSys.getFileStatus(dirPath);
RaidNode.doRaid(conf, stat, new Path(codec.parityDirectory), codec,
new RaidNode.Statistics(), RaidUtils.NULL_PROGRESSABLE,
false, repl, repl);
Integer[] corruptBlockIdxs = new Integer[]{0, 2};
LOG.info("Corrupt block " + corruptBlockIdxs + " of directory " + dirPath);
TestDirectoryRaidDfs.corruptBlocksInDirectory(conf, dirPath,
crcs, corruptBlockIdxs, fileSys, dfsCluster, false, true);
// Create Block Fixer and fix.
FakeDistBlockIntegrityMonitor distBlockFixer = new FakeDistBlockIntegrityMonitor(conf);
assertEquals(0, distBlockFixer.submittedJobs.size());
// One job should be submitted.
distBlockFixer.getCorruptionMonitor().checkAndReconstructBlocks();
assertEquals(1, distBlockFixer.submittedJobs.size());
// No new job should be submitted since we already have one.
distBlockFixer.getCorruptionMonitor().checkAndReconstructBlocks();
assertEquals(1, distBlockFixer.submittedJobs.size());
// Corrupt two more blocks
corruptBlockIdxs = new Integer[]{4, 5};
LOG.info("Corrupt block " + corruptBlockIdxs + " of directory " + dirPath);
TestDirectoryRaidDfs.corruptBlocksInDirectory(conf, dirPath,
crcs, corruptBlockIdxs, fileSys, dfsCluster, false, true);
// A new job should be submitted since two blocks are corrupt.
distBlockFixer.getCorruptionMonitor().checkAndReconstructBlocks();
assertEquals(2, distBlockFixer.submittedJobs.size());
} finally {
myTearDown();
}
}
public static DistributedFileSystem getDFS(
Configuration conf, FileSystem dfs) throws IOException {
Configuration clientConf = new Configuration(conf);
clientConf.set("fs.hdfs.impl",
"org.apache.hadoop.hdfs.DistributedFileSystem");
clientConf.setBoolean("fs.hdfs.impl.disable.cache", true);
URI dfsUri = dfs.getUri();
FileSystem.closeAll();
return (DistributedFileSystem) FileSystem.get(dfsUri, clientConf);
}
private void mySetup(int stripeLength) throws Exception {
if (System.getProperty("hadoop.log.dir") == null) {
String base = new File(".").getAbsolutePath();
System.setProperty("hadoop.log.dir", new Path(base).toString() + "/logs");
}
new File(TEST_DIR).mkdirs(); // Make sure data directory exists
conf = new Configuration();
conf.set("raid.config.file", CONFIG_FILE);
conf.setBoolean("raid.config.reload", true);
conf.setLong("raid.config.reload.interval", RELOAD_INTERVAL);
// scan all policies once every 5 second
conf.setLong("raid.policy.rescan.interval", 5000);
// do not use map-reduce cluster for Raiding
conf.set("raid.classname", "org.apache.hadoop.raid.LocalRaidNode");
conf.set("raid.server.address", "localhost:0");
conf.set("mapred.raid.http.address", "localhost:0");
Utils.loadTestCodecs(conf, stripeLength, stripeLength, 1, 3, "/destraid",
"/destraidrs", false, true);
conf.setBoolean("dfs.permissions", false);
dfsCluster = new MiniDFSCluster(conf, NUM_DATANODES, true, null);
dfsCluster.waitActive();
fileSys = dfsCluster.getFileSystem();
namenode = fileSys.getUri().toString();
FileSystem.setDefaultUri(conf, namenode);
mr = new MiniMRCluster(4, namenode, 3);
jobTrackerName = "localhost:" + mr.getJobTrackerPort();
hftp = "hftp://localhost.localdomain:" + dfsCluster.getNameNodePort();
FileSystem.setDefaultUri(conf, namenode);
conf.set("mapred.job.tracker", jobTrackerName);
ConfigBuilder cb = new ConfigBuilder(CONFIG_FILE);
cb.addPolicy("RaidTest1", "/user/dhruba/raidtest",
1, 1);
cb.addPolicy("RaidTest2", "/user/dhruba/raidtestrs",
1, 1, "rs");
cb.persist();
}
private void myTearDown() throws Exception {
if (cnode != null) { cnode.stop(); cnode.join(); }
if (mr != null) { mr.shutdown(); }
if (dfsCluster != null) { dfsCluster.shutdown(); }
}
static void corruptBlock(String blockName, MiniDFSCluster dfs) throws IOException {
boolean corrupted = false;
for (int i = 0; i < NUM_DATANODES; i++) {
corrupted |= TestDatanodeBlockScanner.corruptReplica(blockName, i, dfs);
}
assertTrue("could not corrupt block", corrupted);
}
}