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From tgra...@apache.org
Subject svn commit: r1367715 - in /hadoop/common/branches/branch-2/hadoop-mapreduce-project: ./ hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/ hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/...
Date Tue, 31 Jul 2012 19:21:28 GMT
Author: tgraves
Date: Tue Jul 31 19:21:27 2012
New Revision: 1367715

URL: http://svn.apache.org/viewvc?rev=1367715&view=rev
Log:
merge -r 1367712:1367713 from trunk. FIXES: MAPREDUCE-4493

Modified:
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/CHANGES.txt
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/LocalDistributedCacheManager.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestLocalDistributedCacheManager.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/filecache/DistributedCache.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobContext.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/filecache/DistributedCache.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MRCaching.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRDFSCaching.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecution.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java
    hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraSort.java

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/CHANGES.txt?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/CHANGES.txt (original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/CHANGES.txt Tue Jul 31 19:21:27
2012
@@ -647,6 +647,9 @@ 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

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/LocalDistributedCacheManager.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/LocalDistributedCacheManager.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/LocalDistributedCacheManager.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapred/LocalDistributedCacheManager.java
Tue Jul 31 19:21:27 2012
@@ -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);

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestLocalDistributedCacheManager.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestLocalDistributedCacheManager.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestLocalDistributedCacheManager.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestLocalDistributedCacheManager.java
Tue Jul 31 19:21:27 2012
@@ -150,7 +150,6 @@ public class TestLocalDistributedCacheMa
     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 TestLocalDistributedCacheMa
     
     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 TestLocalDistributedCacheMa
     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);

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java
Tue Jul 31 19:21:27 2012
@@ -146,7 +146,6 @@ public class TestMRWithDistributedCache 
     job.addFileToClassPath(second);
     job.addArchiveToClassPath(third);
     job.addCacheArchive(fourth.toUri());
-    job.createSymlink();
     job.setMaxMapAttempts(1); // speed up failures
 
     job.submit();

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/filecache/DistributedCache.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/filecache/DistributedCache.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/filecache/DistributedCache.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/filecache/DistributedCache.java
Tue Jul 31 19:21:27 2012
@@ -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, 

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
Tue Jul 31 19:21:27 2012
@@ -313,7 +313,6 @@ public class Submitter extends Configure
     // 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);

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
Tue Jul 31 19:21:27 2012
@@ -1049,9 +1049,10 @@ public class Job extends JobContextImpl 
   }
 
   /**
-   * 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);

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobContext.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobContext.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobContext.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobContext.java
Tue Jul 31 19:21:27 2012
@@ -221,10 +221,11 @@ public interface JobContext extends MRJo
   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 MRJo
    * 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;
 
   /**

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
Tue Jul 31 19:21:27 2012
@@ -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);
       }
     }
 

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
Tue Jul 31 19:21:27 2012
@@ -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";

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/filecache/DistributedCache.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/filecache/DistributedCache.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/filecache/DistributedCache.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/filecache/DistributedCache.java
Tue Jul 31 19:21:27 2012
@@ -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) {

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java
Tue Jul 31 19:21:27 2012
@@ -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", 

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MRCaching.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MRCaching.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MRCaching.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MRCaching.java
Tue Jul 31 19:21:27 2012
@@ -210,19 +210,10 @@ public class MRCaching {
     fs.copyFromLocalFile(tarPath1, cachePath);
     fs.copyFromLocalFile(tarPath2, cachePath);
   }
- 
-  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)
+                                         JobConf conf, String input)
     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

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRDFSCaching.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRDFSCaching.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRDFSCaching.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRDFSCaching.java
Tue Jul 31 19:21:27 2012
@@ -48,7 +48,7 @@ public class TestMiniMRDFSCaching extend
                                             "/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 extend
                                     "/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) {

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java
Tue Jul 31 19:21:27 2012
@@ -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();

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecution.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecution.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecution.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecution.java
Tue Jul 31 19:21:27 2012
@@ -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();

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java
Tue Jul 31 19:21:27 2012
@@ -167,7 +167,6 @@ public class Sort<K,V> extends Configure
       URI partitionUri = new URI(partitionFile.toString() +
                                  "#" + "_sortPartitioning");
       DistributedCache.addCacheFile(partitionUri, conf);
-      DistributedCache.createSymlink(conf);
     }
 
     System.out.println("Running on " +

Modified: hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraSort.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraSort.java?rev=1367715&r1=1367714&r2=1367715&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraSort.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraSort.java
Tue Jul 31 19:21:27 2012
@@ -305,8 +305,7 @@ public class TeraSort extends Configured
         LOG.error(e.getMessage());
         return -1;
       }
-      job.addCacheFile(partitionUri);
-      job.createSymlink();    
+      job.addCacheFile(partitionUri);  
       long end = System.currentTimeMillis();
       System.out.println("Spent " + (end - start) + "ms computing partitions.");
       job.setPartitionerClass(TotalOrderPartitioner.class);



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