/**
* Prepare the mapred.local.dir for the child. The child is sand-boxed now. Whenever it uses
* LocalDirAllocator from now on inside the child, it will only see files inside the
* attempt-directory. This is done in the Child's process space.
*/
static void setupChildMapredLocalDirs(Task t, JobConf conf) {
String[] localDirs = conf.getStrings(JobConf.MAPRED_LOCAL_DIR_PROPERTY);
String jobId = t.getJobID().toString();
String taskId = t.getTaskID().toString();
boolean isCleanup = t.isTaskCleanupTask();
String user = t.getUser();
StringBuffer childMapredLocalDir =
new StringBuffer(
localDirs[0]
+ Path.SEPARATOR
+ TaskTracker.getLocalTaskDir(user, jobId, taskId, isCleanup));
for (int i = 1; i < localDirs.length; i++) {
childMapredLocalDir.append(
","
+ localDirs[i]
+ Path.SEPARATOR
+ TaskTracker.getLocalTaskDir(user, jobId, taskId, isCleanup));
}
LOG.debug("mapred.local.dir for child : " + childMapredLocalDir);
conf.set("mapred.local.dir", childMapredLocalDir.toString());
}
private void startTT(JobConf conf) throws IOException, InterruptedException {
myClock = new FakeClock(); // clock is reset.
String localdirs = TEST_ROOT_DIR + "/userlogs/local/0," + TEST_ROOT_DIR + "/userlogs/local/1";
conf.set(JobConf.MAPRED_LOCAL_DIR_PROPERTY, localdirs);
tt = new TaskTracker();
tt.setConf(new JobConf(conf));
LocalDirAllocator localDirAllocator = new LocalDirAllocator("mapred.local.dir");
tt.setLocalDirAllocator(localDirAllocator);
LocalStorage localStorage = new LocalStorage(conf.getLocalDirs());
localStorage.checkLocalDirs();
tt.setLocalStorage(localStorage);
localizer =
new Localizer(FileSystem.get(conf), conf.getStrings(JobConf.MAPRED_LOCAL_DIR_PROPERTY));
tt.setLocalizer(localizer);
userLogManager = new UtilsForTests.InLineUserLogManager(conf);
TaskController taskController = userLogManager.getTaskController();
taskController.setup(localDirAllocator, localStorage);
tt.setTaskController(taskController);
userLogCleaner = userLogManager.getUserLogCleaner();
userLogCleaner.setClock(myClock);
tt.setUserLogManager(userLogManager);
userLogManager.clearOldUserLogs(conf);
}