Ejemplo n.º 1
0
    private void addLeafTask(TaskAttemptToSchedulerEvent event) {
      TaskAttempt taskAttempt = event.getTaskAttempt();
      List<DataLocation> locations = taskAttempt.getTask().getDataLocations();

      for (DataLocation location : locations) {
        String host = location.getHost();
        leafTaskHosts.add(host);

        HostVolumeMapping hostVolumeMapping = leafTaskHostMapping.get(host);
        if (hostVolumeMapping == null) {
          String rack = RackResolver.resolve(host).getNetworkLocation();
          hostVolumeMapping = new HostVolumeMapping(host, rack);
          leafTaskHostMapping.put(host, hostVolumeMapping);
        }
        hostVolumeMapping.addTaskAttempt(location.getVolumeId(), taskAttempt);

        if (LOG.isDebugEnabled()) {
          LOG.debug("Added attempt req to host " + host);
        }

        HashSet<TaskAttemptId> list = leafTasksRackMapping.get(hostVolumeMapping.getRack());
        if (list == null) {
          list = new HashSet<>();
          leafTasksRackMapping.put(hostVolumeMapping.getRack(), list);
        }

        list.add(taskAttempt.getId());

        if (LOG.isDebugEnabled()) {
          LOG.debug("Added attempt req to rack " + hostVolumeMapping.getRack());
        }
      }

      leafTasks.add(taskAttempt.getId());
    }
Ejemplo n.º 2
0
    private synchronized TaskAttemptId getAndRemove(int volumeId) {
      TaskAttemptId taskAttemptId = null;
      if (!unassignedTaskForEachVolume.containsKey(volumeId)) {
        if (volumeId > REMOTE) {
          diskVolumeLoads.remove(volumeId);
        }
        return taskAttemptId;
      }

      LinkedHashSet<TaskAttempt> list = unassignedTaskForEachVolume.get(volumeId);
      if (list != null && !list.isEmpty()) {
        TaskAttempt taskAttempt;
        synchronized (unassignedTaskForEachVolume) {
          Iterator<TaskAttempt> iterator = list.iterator();
          taskAttempt = iterator.next();
          iterator.remove();
        }

        taskAttemptId = taskAttempt.getId();
        for (DataLocation location : taskAttempt.getTask().getDataLocations()) {
          HostVolumeMapping volumeMapping =
              scheduledRequests.leafTaskHostMapping.get(location.getHost());
          if (volumeMapping != null) {
            volumeMapping.removeTaskAttempt(location.getVolumeId(), taskAttempt);
          }
        }

        increaseConcurrency(volumeId);
      }

      return taskAttemptId;
    }
Ejemplo n.º 3
0
  public void releaseTaskAttempt(TaskAttempt taskAttempt) {
    if (taskAttempt.isLeafTask() && taskAttempt.getWorkerConnectionInfo() != null) {

      HostVolumeMapping mapping =
          scheduledRequests.leafTaskHostMapping.get(
              taskAttempt.getWorkerConnectionInfo().getHost());
      if (mapping != null && mapping.lastAssignedVolumeId.containsKey(taskAttempt.getId())) {
        mapping.decreaseConcurrency(mapping.lastAssignedVolumeId.remove(taskAttempt.getId()));
      }
    }
  }
Ejemplo n.º 4
0
  public void cancel(TaskAttempt taskAttempt) {

    if (taskAttempt.isLeafTask()) {
      releaseTaskAttempt(taskAttempt);

      List<DataLocation> locations = taskAttempt.getTask().getDataLocations();

      for (DataLocation location : locations) {
        HostVolumeMapping volumeMapping =
            scheduledRequests.leafTaskHostMapping.get(location.getHost());
        volumeMapping.addTaskAttempt(location.getVolumeId(), taskAttempt);
      }

      scheduledRequests.leafTasks.add(taskAttempt.getId());
    } else {
      scheduledRequests.nonLeafTasks.add(taskAttempt.getId());
    }

    context
        .getMasterContext()
        .getEventHandler()
        .handle(new TaskAttemptEvent(taskAttempt.getId(), TaskAttemptEventType.TA_ASSIGN_CANCEL));
  }