Examples of org.apache.hadoop.hive.ql.exec.TaskRunner

org.apache.hadoop.hive.ql.exec.TaskRunner
TaskRunner implementation

          launchTask(tsk, queryId, noName, running, jobname, jobs, driverCxt);
        }


        // poll the Tasks to see which one completed
        TaskResult tskRes = pollTasks(running.keySet());
        TaskRunner tskRun = running.remove(tskRes);
        Task<? extends Serializable> tsk = tskRun.getTask();


        int exitVal = tskRes.getExitVal();
        if (exitVal != 0) {
          // TODO: This error messaging is not very informative. Fix that.
          errorMessage = "FAILED: Execution Error, return code " + exitVal

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      cxt.incCurJobNo(1);
      console.printInfo("Launching Job " + cxt.getCurJobNo() + " out of " + jobs);
    }
    tsk.initialize(conf, plan, cxt);
    TaskResult tskRes = new TaskResult();
    TaskRunner tskRun = new TaskRunner(tsk, tskRes);


    // Launch Task
    if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.EXECPARALLEL)
        && tsk.isMapRedTask()) {
      // Launch it in the parallel mode, as a separate thread only for MR tasks
      tskRun.start();
    } else {
      tskRun.runSequential();
    }
    running.put(tskRes, tskRun);
    return;
  }

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          launchTask(tsk, queryId, noName, running, jobname, jobs, driverCxt);
        }


        // poll the Tasks to see which one completed
        TaskResult tskRes = pollTasks(running.keySet());
        TaskRunner tskRun = running.remove(tskRes);
        Task<? extends Serializable> tsk = tskRun.getTask();
        hookContext.addCompleteTask(tskRun);


        int exitVal = tskRes.getExitVal();
        if (exitVal != 0) {
          if (tsk.ifRetryCmdWhenFail()) {

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      cxt.incCurJobNo(1);
      console.printInfo("Launching Job " + cxt.getCurJobNo() + " out of " + jobs);
    }
    tsk.initialize(conf, plan, cxt);
    TaskResult tskRes = new TaskResult();
    TaskRunner tskRun = new TaskRunner(tsk, tskRes);


    // Launch Task
    if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.EXECPARALLEL) && tsk.isMapRedTask()) {
      // Launch it in the parallel mode, as a separate thread only for MR tasks
      tskRun.start();
    } else {
      tskRun.runSequential();
    }
    running.put(tskRes, tskRun);
    return;
  }

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          launchTask(tsk, queryId, noName, running, jobname, jobs, driverCxt);
        }


        // poll the Tasks to see which one completed
        TaskResult tskRes = pollTasks(running.keySet());
        TaskRunner tskRun = running.remove(tskRes);
        Task<? extends Serializable> tsk = tskRun.getTask();
        hookContext.addCompleteTask(tskRun);


        int exitVal = tskRes.getExitVal();
        if (exitVal != 0) {
          if (tsk.ifRetryCmdWhenFail()) {

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      cxt.incCurJobNo(1);
      console.printInfo("Launching Job " + cxt.getCurJobNo() + " out of " + jobs);
    }
    tsk.initialize(conf, plan, cxt);
    TaskResult tskRes = new TaskResult();
    TaskRunner tskRun = new TaskRunner(tsk, tskRes);


    // Launch Task
    if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.EXECPARALLEL) && tsk.isMapRedTask()) {
      // Launch it in the parallel mode, as a separate thread only for MR tasks
      tskRun.start();
    } else {
      tskRun.runSequential();
    }
    running.put(tskRes, tskRun);
    return;
  }

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   */
  public synchronized TaskRunner pollFinished() throws InterruptedException {
    while (!shutdown) {
      Iterator<TaskRunner> it = running.iterator();
      while (it.hasNext()) {
        TaskRunner runner = it.next();
        if (runner != null && !runner.isRunning()) {
          it.remove();
          return runner;
        }
      }
      wait(SLEEP_TIME);

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        // Launch upto maxthreads tasks
        Task<? extends Serializable> task;
        while ((task = driverCxt.getRunnable(maxthreads)) != null) {
          perfLogger.PerfLogBegin(CLASS_NAME, PerfLogger.TASK + task.getName() + "." + task.getId());
          TaskRunner runner = launchTask(task, queryId, noName, jobname, jobs, driverCxt);
          if (!runner.isRunning()) {
            break;
          }
        }


        // poll the Tasks to see which one completed
        TaskRunner tskRun = driverCxt.pollFinished();
        if (tskRun == null) {
          continue;
        }
        hookContext.addCompleteTask(tskRun);


        Task<? extends Serializable> tsk = tskRun.getTask();
        TaskResult result = tskRun.getTaskResult();


        int exitVal = result.getExitVal();
        if (exitVal != 0) {
          if (tsk.ifRetryCmdWhenFail()) {
            driverCxt.shutdown();

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      cxt.incCurJobNo(1);
      console.printInfo("Launching Job " + cxt.getCurJobNo() + " out of " + jobs);
    }
    tsk.initialize(conf, plan, cxt);
    TaskResult tskRes = new TaskResult();
    TaskRunner tskRun = new TaskRunner(tsk, tskRes);


    cxt.launching(tskRun);
    // Launch Task
    if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.EXECPARALLEL) && tsk.isMapRedTask()) {
      // Launch it in the parallel mode, as a separate thread only for MR tasks
      tskRun.start();
    } else {
      tskRun.runSequential();
    }
    return tskRun;
  }

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          launchTask(tsk, queryId, noName, running, jobname, jobs, driverCxt);
        }


        // poll the Tasks to see which one completed
        TaskResult tskRes = pollTasks(running.keySet());
        TaskRunner tskRun = running.remove(tskRes);
        Task<? extends Serializable> tsk = tskRun.getTask();
        hookContext.addCompleteTask(tskRun);


        int exitVal = tskRes.getExitVal();
        if (exitVal != 0) {
          Task<? extends Serializable> backupTask = tsk.getAndInitBackupTask();

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Related Classes of org.apache.hadoop.hive.ql.exec.TaskRunner

org.apache.hadoop.hive.ql.Driver

org.apache.hadoop.hive.ql.DriverContext

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