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HDFS-9630. DistCp minor refactoring and clean up. Contributed by Kai Zheng. 

Change-Id: I363c4ffcac32116ddcdc0a22fac3db92f14a0db0
This commit is contained in:
Zhe Zhang 2016-01-11 09:46:56 -08:00
parent d7e10f8174
commit 87d614c70b
12 changed files with 65 additions and 51 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -874,6 +874,8 @@ Release 2.8.0 - UNRELEASED
HDFS-7779. Support changing ownership, group and replication in HDFS Web
UI. (Ravi Prakash via wheat9)
HDFS-9630. DistCp minor refactoring and clean up. (Kai Zheng via zhz)
OPTIMIZATIONS
HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

10
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/RegexCopyFilter.java
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@ -20,10 +20,16 @@ package org.apache.hadoop.tools;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.*;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IOUtils;
import java.io.*;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;

14
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/SimpleCopyListing.java
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@ -39,7 +39,8 @@ import org.apache.hadoop.security.Credentials;
import com.google.common.annotations.VisibleForTesting;
import java.io.*;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
@ -165,9 +166,9 @@ public class SimpleCopyListing extends CopyListing {
}
}
/** {@inheritDoc} */
@Override
public void doBuildListing(Path pathToListingFile, DistCpOptions options) throws IOException {
protected void doBuildListing(Path pathToListingFile,
DistCpOptions options) throws IOException {
if(options.shouldUseDiff()) {
doBuildListingWithSnapshotDiff(getWriter(pathToListingFile), options);
}else {
@ -227,8 +228,9 @@ public class SimpleCopyListing extends CopyListing {
* @throws IOException
*/
@VisibleForTesting
public void doBuildListingWithSnapshotDiff(SequenceFile.Writer fileListWriter,
DistCpOptions options) throws IOException {
protected void doBuildListingWithSnapshotDiff(
SequenceFile.Writer fileListWriter, DistCpOptions options)
throws IOException {
ArrayList<DiffInfo> diffList = distCpSync.prepareDiffList();
Path sourceRoot = options.getSourcePaths().get(0);
FileSystem sourceFS = sourceRoot.getFileSystem(getConf());
@ -287,7 +289,7 @@ public class SimpleCopyListing extends CopyListing {
* @throws IOException
*/
@VisibleForTesting
public void doBuildListing(SequenceFile.Writer fileListWriter,
protected void doBuildListing(SequenceFile.Writer fileListWriter,
DistCpOptions options) throws IOException {
if (options.getNumListstatusThreads() > 0) {
numListstatusThreads = options.getNumListstatusThreads();

10
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/CopyCommitter.java
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@ -27,10 +27,16 @@ import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.*;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.JobStatus;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter;
import org.apache.hadoop.tools.*;
import org.apache.hadoop.tools.CopyListing;
import org.apache.hadoop.tools.CopyListingFileStatus;
import org.apache.hadoop.tools.DistCpConstants;
import org.apache.hadoop.tools.DistCpOptions;
import org.apache.hadoop.tools.DistCpOptions.FileAttribute;
import org.apache.hadoop.tools.GlobbedCopyListing;
import org.apache.hadoop.tools.util.DistCpUtils;
import java.io.IOException;

5
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/CopyOutputFormat.java
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@ -20,7 +20,10 @@ package org.apache.hadoop.tools.mapred;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.*;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.OutputCommitter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.mapreduce.security.TokenCache;
import org.apache.hadoop.tools.DistCpConstants;

6
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/RetriableFileCopyCommand.java
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@ -201,11 +201,13 @@ public class RetriableFileCopyCommand extends RetriableCommand {
targetFS, target)) {
StringBuilder errorMessage = new StringBuilder("Check-sum mismatch between ")
.append(source).append(" and ").append(target).append(".");
if (sourceFS.getFileStatus(source).getBlockSize() != targetFS.getFileStatus(target).getBlockSize()) {
if (sourceFS.getFileStatus(source).getBlockSize() !=
targetFS.getFileStatus(target).getBlockSize()) {
errorMessage.append(" Source and target differ in block-size.")
.append(" Use -pb to preserve block-sizes during copy.")
.append(" Alternatively, skip checksum-checks altogether, using -skipCrc.")
.append(" (NOTE: By skipping checksums, one runs the risk of masking data-corruption during file-transfer.)");
.append(" (NOTE: By skipping checksums, one runs the risk of " +
"masking data-corruption during file-transfer.)");
}
throw new IOException(errorMessage.toString());
}

6
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/UniformSizeInputFormat.java
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@ -23,12 +23,16 @@ import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.mapreduce.InputFormat;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.hadoop.tools.CopyListingFileStatus;
import org.apache.hadoop.tools.DistCpConstants;
import org.apache.hadoop.tools.util.DistCpUtils;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.mapreduce.*;
import org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
import org.apache.hadoop.conf.Configuration;

21
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/DistCpUtils.java
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@ -18,17 +18,7 @@
package org.apache.hadoop.tools.util;
import java.io.IOException;
import java.net.InetAddress;
import java.net.URI;
import java.net.UnknownHostException;
import java.text.DecimalFormat;
import java.util.EnumSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;
import com.google.common.collect.Maps;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
@ -49,10 +39,15 @@ import org.apache.hadoop.tools.CopyListingFileStatus;
import org.apache.hadoop.tools.DistCpOptions;
import org.apache.hadoop.tools.DistCpOptions.FileAttribute;
import org.apache.hadoop.tools.mapred.UniformSizeInputFormat;
import com.google.common.collect.Maps;
import org.apache.hadoop.util.StringUtils;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
/**
* Utility functions used in DistCp.
*/

10
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ProducerConsumer.java
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@ -20,15 +20,11 @@ package org.apache.hadoop.tools.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.tools.util.WorkReport;
import org.apache.hadoop.tools.util.WorkRequest;
import org.apache.hadoop.tools.util.WorkRequestProcessor;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.ArrayList;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;
/**
* ProducerConsumer class encapsulates input and output queues and a
@ -51,8 +47,8 @@ public class ProducerConsumer<T, R> {
* @param numThreads Size of thread-pool to execute Workers.
*/
public ProducerConsumer(int numThreads) {
this.inputQueue = new LinkedBlockingQueue<WorkRequest<T>>();
this.outputQueue = new LinkedBlockingQueue<WorkReport<R>>();
this.inputQueue = new LinkedBlockingQueue<>();
this.outputQueue = new LinkedBlockingQueue<>();
executor = Executors.newFixedThreadPool(numThreads);
workCnt = new AtomicInteger(0);
}

7
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ThrottledInputStream.java
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@ -18,13 +18,10 @@
package org.apache.hadoop.tools.util;
import java.io.IOException;
import java.io.InputStream;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.PositionedReadable;
import com.google.common.base.Preconditions;
import java.io.IOException;
import java.io.InputStream;
/**
* The ThrottleInputStream provides bandwidth throttling on a specified

3
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/WorkRequestProcessor.java
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@ -18,9 +18,6 @@
package org.apache.hadoop.tools.util;
import org.apache.hadoop.tools.util.WorkReport;
import org.apache.hadoop.tools.util.WorkRequest;
/**
* Interface for ProducerConsumer worker loop.
*

20
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/mapred/TestCopyMapper.java
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@ -378,7 +378,8 @@ public class TestCopyMapper {
workPath);
copyMapper.setup(context);
copyMapper.map(new Text(DistCpUtils.getRelativePath(new Path(SOURCE_PATH), pathList.get(0))),
copyMapper.map(new Text(DistCpUtils.getRelativePath(new Path(SOURCE_PATH),
pathList.get(0))),
new CopyListingFileStatus(fs.getFileStatus(pathList.get(0))), context);
Assert.assertTrue("There should have been an exception.", false);
@ -525,7 +526,8 @@ public class TestCopyMapper {
mkdirs(TARGET_PATH);
cluster.getFileSystem().setPermission(new Path(SOURCE_PATH + "/src/file"),
new FsPermission(FsAction.READ, FsAction.READ, FsAction.READ));
cluster.getFileSystem().setPermission(new Path(TARGET_PATH), new FsPermission((short)511));
cluster.getFileSystem().setPermission(new Path(TARGET_PATH),
new FsPermission((short)511));
final FileSystem tmpFS = tmpUser.doAs(new PrivilegedAction<FileSystem>() {
@Override
@ -785,7 +787,8 @@ public class TestCopyMapper {
}
if (ignoreFailures) {
for (Text value : stubContext.getWriter().values()) {
Assert.assertTrue(value.toString() + " is not skipped", value.toString().startsWith("FAIL:"));
Assert.assertTrue(value.toString() + " is not skipped",
value.toString().startsWith("FAIL:"));
}
}
Assert.assertTrue("There should have been an exception.", ignoreFailures);
@ -813,7 +816,6 @@ public class TestCopyMapper {
@Test(timeout=40000)
public void testCopyFailOnBlockSizeDifference() {
try {
deleteState();
createSourceDataWithDifferentBlockSize();
@ -833,16 +835,18 @@ public class TestCopyMapper {
for (Path path : pathList) {
final FileStatus fileStatus = fs.getFileStatus(path);
copyMapper.map(new Text(DistCpUtils.getRelativePath(new Path(SOURCE_PATH), path)),
new CopyListingFileStatus(fileStatus), context);
copyMapper.map(new Text(DistCpUtils.getRelativePath(new Path(SOURCE_PATH),
path)), new CopyListingFileStatus(fileStatus), context);
}
Assert.fail("Copy should have failed because of block-size difference.");
}
catch (Exception exception) {
// Check that the exception suggests the use of -pb/-skipCrc.
Assert.assertTrue("Failure exception should have suggested the use of -pb.", exception.getCause().getCause().getMessage().contains("pb"));
Assert.assertTrue("Failure exception should have suggested the use of -skipCrc.", exception.getCause().getCause().getMessage().contains("skipCrc"));
Assert.assertTrue("Failure exception should have suggested the use of -pb.",
exception.getCause().getCause().getMessage().contains("pb"));
Assert.assertTrue("Failure exception should have suggested the use of -skipCrc.",
exception.getCause().getCause().getMessage().contains("skipCrc"));
}
}