MAPREDUCE-6365. Refactor JobResourceUploader#uploadFilesInternal (Chris Trezzo via sjlee)

(cherry picked from commit 8f0d3d69d6)

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobResourceUploader.java

@@ -54,7 +54,7 @@ class JobResourceUploader {
    * @param submitJobDir the submission directory of the job
    * @throws IOException
    */
-  public void uploadFiles(Job job, Path submitJobDir) throws IOException {
+  public void uploadResources(Job job, Path submitJobDir) throws IOException {
     Configuration conf = job.getConfiguration();
     short replication =
         (short) conf.getInt(Job.SUBMIT_REPLICATION,
@@ -66,12 +66,6 @@ class JobResourceUploader {
           + "with ToolRunner to remedy this.");
     }
 
-    // get all the command line arguments passed in by the user conf
-    String files = conf.get("tmpfiles");
-    String libjars = conf.get("tmpjars");
-    String archives = conf.get("tmparchives");
-    String jobJar = job.getJar();
-
     //
     // Figure out what fs the JobTracker is using. Copy the
     // job to it, under a temporary name. This allows DFS to work,
@@ -92,12 +86,27 @@ class JobResourceUploader {
     FsPermission mapredSysPerms =
         new FsPermission(JobSubmissionFiles.JOB_DIR_PERMISSION);
     FileSystem.mkdirs(jtFs, submitJobDir, mapredSysPerms);
-    Path filesDir = JobSubmissionFiles.getJobDistCacheFiles(submitJobDir);
-    Path archivesDir = JobSubmissionFiles.getJobDistCacheArchives(submitJobDir);
-    Path libjarsDir = JobSubmissionFiles.getJobDistCacheLibjars(submitJobDir);
     // add all the command line files/ jars and archive
     // first copy them to jobtrackers filesystem
 
+    uploadFiles(conf, submitJobDir, mapredSysPerms, replication);
+    uploadLibJars(conf, submitJobDir, mapredSysPerms, replication);
+    uploadArchives(conf, submitJobDir, mapredSysPerms, replication);
+    uploadJobJar(job, submitJobDir, replication);
+    addLog4jToDistributedCache(job, submitJobDir);
+
+    // set the timestamps of the archives and files
+    // set the public/private visibility of the archives and files
+    ClientDistributedCacheManager.determineTimestampsAndCacheVisibilities(conf);
+    // get DelegationToken for cached file
+    ClientDistributedCacheManager.getDelegationTokens(conf,
+        job.getCredentials());
+  }
+
+  private void uploadFiles(Configuration conf, Path submitJobDir,
+      FsPermission mapredSysPerms, short submitReplication) throws IOException {
+    String files = conf.get("tmpfiles");
+    Path filesDir = JobSubmissionFiles.getJobDistCacheFiles(submitJobDir);
     if (files != null) {
       FileSystem.mkdirs(jtFs, filesDir, mapredSysPerms);
       String[] fileArr = files.split(",");
@@ -109,7 +118,7 @@ class JobResourceUploader {
           throw new IllegalArgumentException(e);
         }
         Path tmp = new Path(tmpURI);
-        Path newPath = copyRemoteFiles(filesDir, tmp, conf, replication);
+        Path newPath = copyRemoteFiles(filesDir, tmp, conf, submitReplication);
         try {
           URI pathURI = getPathURI(newPath, tmpURI.getFragment());
           DistributedCache.addCacheFile(pathURI, conf);
@@ -119,13 +128,19 @@ class JobResourceUploader {
         }
       }
     }
+  }
 
+  private void uploadLibJars(Configuration conf, Path submitJobDir,
+      FsPermission mapredSysPerms, short submitReplication) throws IOException {
+    String libjars = conf.get("tmpjars");
+    Path libjarsDir = JobSubmissionFiles.getJobDistCacheLibjars(submitJobDir);
     if (libjars != null) {
       FileSystem.mkdirs(jtFs, libjarsDir, mapredSysPerms);
       String[] libjarsArr = libjars.split(",");
       for (String tmpjars : libjarsArr) {
         Path tmp = new Path(tmpjars);
-        Path newPath = copyRemoteFiles(libjarsDir, tmp, conf, replication);
+        Path newPath =
+            copyRemoteFiles(libjarsDir, tmp, conf, submitReplication);
 
         // Add each file to the classpath
         DistributedCache.addFileToClassPath(
@@ -140,7 +155,12 @@ class JobResourceUploader {
         DistributedCache.addCacheFile(libJarsDirWildcard.toUri(), conf);
       }
     }
+  }
 
+  private void uploadArchives(Configuration conf, Path submitJobDir,
+      FsPermission mapredSysPerms, short submitReplication) throws IOException {
+    String archives = conf.get("tmparchives");
+    Path archivesDir = JobSubmissionFiles.getJobDistCacheArchives(submitJobDir);
     if (archives != null) {
       FileSystem.mkdirs(jtFs, archivesDir, mapredSysPerms);
       String[] archivesArr = archives.split(",");
@@ -152,7 +172,8 @@ class JobResourceUploader {
           throw new IllegalArgumentException(e);
         }
         Path tmp = new Path(tmpURI);
-        Path newPath = copyRemoteFiles(archivesDir, tmp, conf, replication);
+        Path newPath =
+            copyRemoteFiles(archivesDir, tmp, conf, submitReplication);
         try {
           URI pathURI = getPathURI(newPath, tmpURI.getFragment());
           DistributedCache.addCacheArchive(pathURI, conf);
@@ -162,7 +183,11 @@ class JobResourceUploader {
         }
       }
     }
+  }
 
+  private void uploadJobJar(Job job, Path submitJobDir, short submitReplication)
+      throws IOException {
+    String jobJar = job.getJar();
     if (jobJar != null) { // copy jar to JobTracker's fs
       // use jar name if job is not named.
       if ("".equals(job.getJobName())) {
@@ -174,22 +199,13 @@ class JobResourceUploader {
       // we don't need to copy it from local fs
       if (jobJarURI.getScheme() == null || jobJarURI.getScheme().equals("file")) {
         copyJar(jobJarPath, JobSubmissionFiles.getJobJar(submitJobDir),
-            replication);
+            submitReplication);
         job.setJar(JobSubmissionFiles.getJobJar(submitJobDir).toString());
       }
     } else {
       LOG.warn("No job jar file set.  User classes may not be found. "
           + "See Job or Job#setJar(String).");
     }
-
-    addLog4jToDistributedCache(job, submitJobDir);
-
-    // set the timestamps of the archives and files
-    // set the public/private visibility of the archives and files
-    ClientDistributedCacheManager.determineTimestampsAndCacheVisibilities(conf);
-    // get DelegationToken for cached file
-    ClientDistributedCacheManager.getDelegationTokens(conf,
-        job.getCredentials());
   }
 
   // copies a file to the jobtracker filesystem and returns the path where it

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java

@@ -99,7 +99,7 @@ class JobSubmitter {
         Job.DEFAULT_USE_WILDCARD_FOR_LIBJARS);
     JobResourceUploader rUploader = new JobResourceUploader(jtFs, useWildcards);
 
-    rUploader.uploadFiles(job, jobSubmitDir);
+    rUploader.uploadResources(job, jobSubmitDir);
 
     // Get the working directory. If not set, sets it to filesystem working dir
     // This code has been added so that working directory reset before running