// ****** Imitate TaskRunner code.
TrackerDistributedCacheManager manager =
new TrackerDistributedCacheManager(conf, taskController);
TaskDistributedCacheManager handle =
manager.newTaskDistributedCacheManager(jobid, subConf);
assertNull(null, DistributedCache.getLocalCacheFiles(subConf));
File workDir = new File(new Path(TEST_ROOT_DIR, "workdir").toString());
handle.setupCache(subConf, TaskTracker.getPublicDistributedCacheDir(),
TaskTracker.getPrivateDistributedCacheDir(userName));
JobLocalizer.downloadPrivateCache(subConf);