/**
* 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.util.Map;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.RaidDFSUtil;
import org.apache.hadoop.hdfs.TestRaidDfs;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.util.StringUtils;
import org.junit.Test;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;
import junit.framework.TestCase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.TestDatanodeBlockScanner;
import org.apache.hadoop.mapred.MiniMRCluster;
public class TestFileCorruptions extends TestCase {
final static Log LOG = LogFactory.getLog(
"org.apache.hadoop.raid.TestFileCorruptions");
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;
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();
}
/**
* tests that the distributed block fixer obeys
* the limit on how many jobs to submit simultaneously.
*/
@Test
public void testCorruptFileCounter() throws Exception {
LOG.info("Test testCorruptFileCounter started.");
long blockSize = 8192L;
int stripeLength = 3;
mySetup(stripeLength, -1); // never har
Path file1 = new Path("/user/dhruba/raidtest/file1");
Path file2 = new Path("/user/dhruba/raidtest/file2");
Path destPath = new Path("/destraid/user/dhruba/raidtest");
long crc1 = TestRaidDfs.createTestFilePartialLastBlock(fileSys, file1,
1, 20, blockSize);
long crc2 = TestRaidDfs.createTestFilePartialLastBlock(fileSys, file2,
1, 20, blockSize);
LOG.info("Test testCorruptFileCounter created test files");
// create an instance of the RaidNode
Configuration localConf = new Configuration(conf);
localConf.setInt("raid.blockfix.interval", 1000);
localConf.set("raid.blockfix.classname",
"org.apache.hadoop.raid.DistBlockIntegrityMonitor");
localConf.setLong("raid.blockfix.filespertask", 2L);
localConf.setLong("raid.blockfix.maxpendingjobs", 1L);
localConf.set("raid.corruptfile.counter.dirs", "/user/dhruba/raidtest,/user/dhruba1");
localConf.setInt("raid.corruptfilecount.interval", 1000);
try {
cnode = RaidNode.createRaidNode(null, localConf);
TestRaidDfs.waitForFileRaided(LOG, fileSys, file1, destPath);
TestRaidDfs.waitForFileRaided(LOG, fileSys, file2, destPath);
cnode.stop(); cnode.join();
FileStatus file1Stat = fileSys.getFileStatus(file1);
FileStatus file2Stat = fileSys.getFileStatus(file2);
DistributedFileSystem dfs = (DistributedFileSystem)fileSys;
LocatedBlocks file1Loc =
RaidDFSUtil.getBlockLocations(dfs, file1.toUri().getPath(),
0, file1Stat.getLen());
LocatedBlocks file2Loc =
RaidDFSUtil.getBlockLocations(dfs, file2.toUri().getPath(),
0, file2Stat.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 file1
int[] corruptBlockIdxs = new int[]{0, 1, 2, 3, 4, 6};
for (int idx: corruptBlockIdxs)
corruptBlock(file1Loc.get(idx).getBlock().getBlockName(), dfsCluster);
RaidDFSUtil.reportCorruptBlocks(dfs, file1, corruptBlockIdxs, blockSize);
cnode = RaidNode.createRaidNode(null, localConf);
Thread.sleep(3000);
Map<String, Long> result = cnode.getCorruptFileCounterMap();
assertEquals("We expect 1 corrupt files",
result.get("/user/dhruba/raidtest"), new Long(1L));
assertEquals("We expect 0 corrupt files",
result.get("/user/dhruba1"), new Long(0L));
// corrupt file2
for (int idx: corruptBlockIdxs)
corruptBlock(file2Loc.get(idx).getBlock().getBlockName(), dfsCluster);
RaidDFSUtil.reportCorruptBlocks(dfs, file2, corruptBlockIdxs, blockSize);
Thread.sleep(3000);
result = cnode.getCorruptFileCounterMap();
assertEquals("We expect 2 corrupt files",
result.get("/user/dhruba/raidtest"), new Long(2L));
assertEquals("We expect 0 corrupt files",
result.get("/user/dhruba1"), new Long(0L));
} catch (Exception e) {
LOG.info("Test testCorruptFileCounter exception " + e.getMessage(),
e);
throw e;
} finally {
myTearDown();
}
}
private void mySetup(int stripeLength, int timeBeforeHar) throws Exception {
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.setBoolean("dfs.permissions", false);
Utils.loadTestCodecs(conf, 5, 1, 3, "/destraid", "/destraidrs");
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);
FileWriter fileWriter = new FileWriter(CONFIG_FILE);
fileWriter.write("<?xml version=\"1.0\"?>\n");
String str = "<configuration> " +
"<policy name = \"RaidTest1\"> " +
"<srcPath prefix=\"/user/dhruba/raidtest\"/> " +
"<codecId>xor</codecId> " +
"<destPath> /destraid</destPath> " +
"<property> " +
"<name>targetReplication</name> " +
"<value>1</value> " +
"<description>after RAIDing, decrease the replication factor of a file to this value." +
"</description> " +
"</property> " +
"<property> " +
"<name>metaReplication</name> " +
"<value>1</value> " +
"<description> replication factor of parity file" +
"</description> " +
"</property> " +
"<property> " +
"<name>modTimePeriod</name> " +
"<value>2000</value> " +
"<description> time (milliseconds) after a file is modified to make it " +
"a candidate for RAIDing " +
"</description> " +
"</property> ";
if (timeBeforeHar >= 0) {
str +=
"<property> " +
"<name>time_before_har</name> " +
"<value>" + timeBeforeHar + "</value> " +
"<description> amount of time waited before har'ing parity files" +
"</description> " +
"</property> ";
}
str +=
"</policy>" +
"</configuration>";
fileWriter.write(str);
fileWriter.close();
}
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);
}
}