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MAPREDUCE-4493. Distibuted Cache Compatability Issues (Robert Evans via tgraves) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1367713 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Thomas Graves 2012-07-31 19:20:03 +00:00
parent 75be1e0e76
commit 735b50e8bd
20 changed files with 63 additions and 80 deletions
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4
hadoop-common-project/hadoop-common/src/site/apt/DeprecatedProperties.apt.vm
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@ -196,7 +196,9 @@ Deprecated Properties
*---+---+
|mapred.compress.map.output | mapreduce.map.output.compress
*---+---+
|mapred.create.symlink | mapreduce.job.cache.symlink.create
|mapred.create.symlink | NONE - symlinking is always on
*---+---+
|mapreduce.job.cache.symlink.create | NONE - symlinking is always on
*---+---+
|mapred.data.field.separator | mapreduce.fieldsel.data.field.separator
*---+---+

3
hadoop-mapreduce-project/CHANGES.txt
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@ -771,6 +771,9 @@ Release 0.23.3 - UNRELEASED
MAPREDUCE-4496. AM logs link is missing user name (Jason Lowe via bobby)
MAPREDUCE-4493. Distibuted Cache Compatability Issues (Robert Evans
via tgraves)
Release 0.23.2 - UNRELEASED
INCOMPATIBLE CHANGES

9
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/LocalDistributedCacheManager.java
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@ -84,7 +84,6 @@ class LocalDistributedCacheManager {
* @throws IOException
*/
public void setup(JobConf conf) throws IOException {
boolean mkLinks = DistributedCache.getSymlink(conf);
File workDir = new File(System.getProperty("user.dir"));
// Generate YARN local resources objects corresponding to the distributed
@ -145,11 +144,9 @@ class LocalDistributedCacheManager {
throw new IOException(e);
}
String pathString = path.toUri().toString();
if(mkLinks) {
String link = entry.getKey();
String target = new File(path.toUri()).getPath();
symlink(workDir, target, link);
}
String link = entry.getKey();
String target = new File(path.toUri()).getPath();
symlink(workDir, target, link);
if (resource.getType() == LocalResourceType.ARCHIVE) {
localArchives.add(pathString);

3
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestLocalDistributedCacheManager.java
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@ -150,7 +150,6 @@ public class TestLocalDistributedCacheManager {
conf.set(MRJobConfig.CACHE_FILES_SIZES, "201");
conf.set(MRJobConfig.CACHE_FILE_VISIBILITIES, "false");
conf.set(MRConfig.LOCAL_DIR, localDir.getAbsolutePath());
conf.set(MRJobConfig.CACHE_SYMLINK, "yes");
LocalDistributedCacheManager manager = new LocalDistributedCacheManager();
try {
manager.setup(conf);
@ -197,7 +196,6 @@ public class TestLocalDistributedCacheManager {
conf.set(MRJobConfig.CACHE_FILES, "");
conf.set(MRConfig.LOCAL_DIR, localDir.getAbsolutePath());
conf.set(MRJobConfig.CACHE_SYMLINK, "yes");
LocalDistributedCacheManager manager = new LocalDistributedCacheManager();
try {
manager.setup(conf);
@ -268,7 +266,6 @@ public class TestLocalDistributedCacheManager {
conf.set(MRJobConfig.CACHE_FILES_SIZES, "201,201");
conf.set(MRJobConfig.CACHE_FILE_VISIBILITIES, "false,false");
conf.set(MRConfig.LOCAL_DIR, localDir.getAbsolutePath());
conf.set(MRJobConfig.CACHE_SYMLINK, "yes");
LocalDistributedCacheManager manager = new LocalDistributedCacheManager();
try {
manager.setup(conf);

1
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java
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@ -146,7 +146,6 @@ public class TestMRWithDistributedCache extends TestCase {
job.addFileToClassPath(second);
job.addArchiveToClassPath(third);
job.addCacheArchive(fourth.toUri());
job.createSymlink();
job.setMaxMapAttempts(1); // speed up failures
job.submit();

11
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/filecache/DistributedCache.java
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@ -48,8 +48,12 @@ import org.apache.hadoop.mapreduce.Job;
* Archives (zip, tar and tgz/tar.gz files) are un-archived at the slave nodes.
* Jars may be optionally added to the classpath of the tasks, a rudimentary
* software distribution mechanism. Files have execution permissions.
* Optionally users can also direct it to symlink the distributed cache file(s)
* into the working directory of the task.</p>
* In older version of Hadoop Map/Reduce users could optionally ask for symlinks
* to be created in the working directory of the child task. In the current
* version symlinks are always created. If the URL does not have a fragment
* the name of the file or directory will be used. If multiple files or
* directories map to the same link name, the last one added, will be used. All
* others will not even be downloaded.</p>
*
* <p><code>DistributedCache</code> tracks modification timestamps of the cache
* files. Clearly the cache files should not be modified by the application
@ -91,8 +95,7 @@ import org.apache.hadoop.mapreduce.Job;
*
* public void configure(JobConf job) {
* // Get the cached archives/files
* localArchives = DistributedCache.getLocalCacheArchives(job);
* localFiles = DistributedCache.getLocalCacheFiles(job);
* File f = new File("./map.zip/some/file/in/zip.txt");
* }
*
* public void map(K key, V value,

1
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
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@ -313,7 +313,6 @@ public class Submitter extends Configured implements Tool {
// add default debug script only when executable is expressed as
// <path>#<executable>
if (exec.contains("#")) {
DistributedCache.createSymlink(conf);
// set default gdb commands for map and reduce task
String defScript = "$HADOOP_PREFIX/src/c++/pipes/debug/pipes-default-script";
setIfUnset(conf, MRJobConfig.MAP_DEBUG_SCRIPT,defScript);

5
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
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@ -1049,9 +1049,10 @@ public class Job extends JobContextImpl implements JobContext {
}
/**
* This method allows you to create symlinks in the current working directory
* of the task to all the cache files/archives
* Originally intended to enable symlinks, but currently symlinks cannot be
* disabled.
*/
@Deprecated
public void createSymlink() {
ensureState(JobState.DEFINE);
DistributedCache.createSymlink(conf);

15
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobContext.java
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@ -221,10 +221,11 @@ public interface JobContext extends MRJobConfig {
public String getUser();
/**
* This method checks to see if symlinks are to be create for the
* localized cache files in the current working directory
* @return true if symlinks are to be created- else return false
* Originally intended to check if symlinks should be used, but currently
* symlinks cannot be disabled.
* @return true
*/
@Deprecated
public boolean getSymlink();
/**
@ -251,14 +252,22 @@ public interface JobContext extends MRJobConfig {
* Return the path array of the localized caches
* @return A path array of localized caches
* @throws IOException
* @deprecated the array returned only includes the items the were
* downloaded. There is no way to map this to what is returned by
* {@link #getCacheArchives()}.
*/
@Deprecated
public Path[] getLocalCacheArchives() throws IOException;
/**
* Return the path array of the localized files
* @return A path array of localized files
* @throws IOException
* @deprecated the array returned only includes the items the were
* downloaded. There is no way to map this to what is returned by
* {@link #getCacheFiles()}.
*/
@Deprecated
public Path[] getLocalCacheFiles() throws IOException;
/**

2
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
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@ -190,7 +190,6 @@ class JobSubmitter {
//should not throw a uri exception
throw new IOException("Failed to create uri for " + tmpFile, ue);
}
DistributedCache.createSymlink(conf);
}
}
@ -225,7 +224,6 @@ class JobSubmitter {
//should not throw an uri excpetion
throw new IOException("Failed to create uri for " + tmpArchives, ue);
}
DistributedCache.createSymlink(conf);
}
}

4
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
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@ -114,6 +114,10 @@ public interface MRJobConfig {
public static final String CACHE_ARCHIVES_VISIBILITIES = "mapreduce.job.cache.archives.visibilities";
/**
* @deprecated Symlinks are always on and cannot be disabled.
*/
@Deprecated
public static final String CACHE_SYMLINK = "mapreduce.job.cache.symlink.create";
public static final String USER_LOG_RETAIN_HOURS = "mapreduce.job.userlog.retain.hours";

35
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/filecache/DistributedCache.java
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@ -55,8 +55,12 @@ import java.net.URI;
* Archives (zip, tar and tgz/tar.gz files) are un-archived at the slave nodes.
* Jars may be optionally added to the classpath of the tasks, a rudimentary
* software distribution mechanism. Files have execution permissions.
* Optionally users can also direct it to symlink the distributed cache file(s)
* into the working directory of the task.</p>
* In older version of Hadoop Map/Reduce users could optionally ask for symlinks
* to be created in the working directory of the child task. In the current
* version symlinks are always created. If the URL does not have a fragment
* the name of the file or directory will be used. If multiple files or
* directories map to the same link name, the last one added, will be used. All
* others will not even be downloaded.</p>
*
* <p><code>DistributedCache</code> tracks modification timestamps of the cache
* files. Clearly the cache files should not be modified by the application
@ -98,8 +102,7 @@ import java.net.URI;
*
* public void configure(JobConf job) {
* // Get the cached archives/files
* localArchives = DistributedCache.getLocalCacheArchives(job);
* localFiles = DistributedCache.getLocalCacheFiles(job);
* File f = new File("./map.zip/some/file/in/zip.txt");
* }
*
* public void map(K key, V value,
@ -375,32 +378,26 @@ public class DistributedCache {
}
/**
* This method allows you to create symlinks in the current working directory
* of the task to all the cache files/archives.
* Intended to be used by user code.
* Originally intended to enable symlinks, but currently symlinks cannot be
* disabled. This is a NO-OP.
* @param conf the jobconf
* @deprecated Use {@link Job#createSymlink()} instead
* @deprecated This is a NO-OP.
*/
@Deprecated
public static void createSymlink(Configuration conf){
conf.set(MRJobConfig.CACHE_SYMLINK, "yes");
//NOOP
}
/**
* This method checks to see if symlinks are to be create for the
* localized cache files in the current working directory
* Used by internal DistributedCache code.
* Originally intended to check if symlinks should be used, but currently
* symlinks cannot be disabled.
* @param conf the jobconf
* @return true if symlinks are to be created- else return false
* @deprecated Use {@link JobContext#getSymlink()} instead
* @return true
* @deprecated symlinks are always created.
*/
@Deprecated
public static boolean getSymlink(Configuration conf){
String result = conf.get(MRJobConfig.CACHE_SYMLINK);
if ("yes".equals(result)){
return true;
}
return false;
return true;
}
private static boolean[] parseBooleans(String[] strs) {

2
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java
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@ -246,8 +246,6 @@ public class ConfigUtil {
new String[] {MRJobConfig.CACHE_FILE_TIMESTAMPS});
Configuration.addDeprecation("mapred.cache.archives.timestamps",
new String[] {MRJobConfig.CACHE_ARCHIVES_TIMESTAMPS});
Configuration.addDeprecation("mapred.create.symlink",
new String[] {MRJobConfig.CACHE_SYMLINK});
Configuration.addDeprecation("mapred.working.dir",
new String[] {MRJobConfig.WORKING_DIR});
Configuration.addDeprecation("user.name",

34
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MRCaching.java
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@ -214,15 +214,6 @@ public class MRCaching {
public static TestResult launchMRCache(String indir,
String outdir, String cacheDir,
JobConf conf, String input)
throws IOException {
setupCache(cacheDir, FileSystem.get(conf));
return launchMRCache(indir,outdir, cacheDir, conf, input, false);
}
public static TestResult launchMRCache(String indir,
String outdir, String cacheDir,
JobConf conf, String input,
boolean withSymlink)
throws IOException {
String TEST_ROOT_DIR = new Path(System.getProperty("test.build.data","/tmp"))
.toString().replace(' ', '+');
@ -256,24 +247,13 @@ public class MRCaching {
conf.setNumReduceTasks(1);
conf.setSpeculativeExecution(false);
URI[] uris = new URI[6];
if (!withSymlink) {
conf.setMapperClass(MRCaching.MapClass.class);
uris[0] = fs.getUri().resolve(cacheDir + "/test.txt");
uris[1] = fs.getUri().resolve(cacheDir + "/test.jar");
uris[2] = fs.getUri().resolve(cacheDir + "/test.zip");
uris[3] = fs.getUri().resolve(cacheDir + "/test.tgz");
uris[4] = fs.getUri().resolve(cacheDir + "/test.tar.gz");
uris[5] = fs.getUri().resolve(cacheDir + "/test.tar");
} else {
DistributedCache.createSymlink(conf);
conf.setMapperClass(MRCaching.MapClass2.class);
uris[0] = fs.getUri().resolve(cacheDir + "/test.txt#" + "test.txt");
uris[1] = fs.getUri().resolve(cacheDir + "/test.jar#" + "testjar");
uris[2] = fs.getUri().resolve(cacheDir + "/test.zip#" + "testzip");
uris[3] = fs.getUri().resolve(cacheDir + "/test.tgz#" + "testtgz");
uris[4] = fs.getUri().resolve(cacheDir + "/test.tar.gz#" + "testtargz");
uris[5] = fs.getUri().resolve(cacheDir + "/test.tar#" + "testtar");
}
conf.setMapperClass(MRCaching.MapClass2.class);
uris[0] = fs.getUri().resolve(cacheDir + "/test.txt");
uris[1] = fs.getUri().resolve(cacheDir + "/test.jar");
uris[2] = fs.getUri().resolve(cacheDir + "/test.zip");
uris[3] = fs.getUri().resolve(cacheDir + "/test.tgz");
uris[4] = fs.getUri().resolve(cacheDir + "/test.tar.gz");
uris[5] = fs.getUri().resolve(cacheDir + "/test.tar");
DistributedCache.addCacheFile(uris[0], conf);
// Save expected file sizes

4
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRDFSCaching.java
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@ -48,7 +48,7 @@ public class TestMiniMRDFSCaching extends TestCase {
"/cachedir",
mr.createJobConf(),
"The quick brown fox\nhas many silly\n"
+ "red fox sox\n", false);
+ "red fox sox\n");
assertTrue("Archives not matching", ret.isOutputOk);
// launch MR cache with symlinks
ret = MRCaching.launchMRCache("/testing/wc/input",
@ -56,7 +56,7 @@ public class TestMiniMRDFSCaching extends TestCase {
"/cachedir",
mr.createJobConf(),
"The quick brown fox\nhas many silly\n"
+ "red fox sox\n", true);
+ "red fox sox\n");
assertTrue("Archives not matching", ret.isOutputOk);
} finally {
if (fileSys != null) {

2
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java
View File

@ -211,6 +211,7 @@ public class TestMRJobs {
Path outputDir =
new Path(mrCluster.getTestWorkDir().getAbsolutePath(), "random-output");
FileOutputFormat.setOutputPath(job, outputDir);
job.setSpeculativeExecution(false);
job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
job.setJarByClass(RandomTextWriterJob.class);
job.setMaxMapAttempts(1); // speed up failures
@ -462,7 +463,6 @@ public class TestMRJobs {
job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
job.addArchiveToClassPath(third);
job.addCacheArchive(fourth.toUri());
job.createSymlink();
job.setMaxMapAttempts(1); // speed up failures
job.submit();

1
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecution.java
View File

@ -301,7 +301,6 @@ public class TestSpeculativeExecution {
// Creates the Job Configuration
job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
job.createSymlink();
job.setMaxMapAttempts(2);
job.submit();

1
hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java
View File

@ -167,7 +167,6 @@ public class Sort<K,V> extends Configured implements Tool {
URI partitionUri = new URI(partitionFile.toString() +
"#" + "_sortPartitioning");
DistributedCache.addCacheFile(partitionUri, conf);
DistributedCache.createSymlink(conf);
}
System.out.println("Running on " +

1
hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraSort.java
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@ -306,7 +306,6 @@ public class TeraSort extends Configured implements Tool {
return -1;
}
job.addCacheFile(partitionUri);
job.createSymlink();
long end = System.currentTimeMillis();
System.out.println("Spent " + (end - start) + "ms computing partitions.");
job.setPartitionerClass(TotalOrderPartitioner.class);

1
hadoop-tools/hadoop-streaming/src/main/java/org/apache/hadoop/streaming/StreamJob.java
View File

@ -958,7 +958,6 @@ public class StreamJob implements Tool {
if (!b)
fail(LINK_URI);
}
DistributedCache.createSymlink(jobConf_);
// set the jobconf for the caching parameters
if (cacheArchives != null)
DistributedCache.setCacheArchives(archiveURIs, jobConf_);