Examples of io.druid.indexing.common.task.Task

io.druid.indexing.common.task.Task
Represents a task that can run on a worker. The general contracts surrounding Tasks are:
- Tasks must operate on a single datasource.
- Tasks should be immutable, since the task ID is used as a proxy for the task in many locations.
- Task IDs must be unique. This can be done by naming them using UUIDs or the current timestamp.
- Tasks are each part of a "task group", which is a set of tasks that can share interval locks. These are useful for producing sharded segments.
- Tasks do not need to explicitly release locks; they are released upon task completion. Tasks may choose to release locks early if they desire.

  }


  @Test
  public void testSimple() throws Exception
  {
    final Task task = new AbstractFixedIntervalTask(
        "id1",
        "id1",
        new TaskResource("id1", 1),
        "ds",
        new Interval("2012-01-01/P1D")

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  }


  @Test
  public void testBadInterval() throws Exception
  {
    final Task task = new AbstractFixedIntervalTask("id1", "id1", "ds", new Interval("2012-01-01/P1D"))
    {
      @Override
      public String getType()
      {
        return "test";

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  }


  @Test
  public void testBadVersion() throws Exception
  {
    final Task task = new AbstractFixedIntervalTask("id1", "id1", "ds", new Interval("2012-01-01/P1D"))
    {
      @Override
      public String getType()
      {
        return "test";

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    Assert.assertEquals("segments nuked", 0, mdc.getNuked().size());
  }


  private TaskStatus runTask(final Task task) throws Exception
  {
    final Task dummyTask = new DefaultObjectMapper().readValue(
        "{\"type\":\"noop\", \"isReadyResult\":\"exception\"}\"",
        Task.class
    );
    final long startTime = System.currentTimeMillis();


    Preconditions.checkArgument(!task.getId().equals(dummyTask.getId()));


    tq.add(dummyTask);
    tq.add(task);


    TaskStatus retVal = null;


    for (final String taskId : ImmutableList.of(dummyTask.getId(), task.getId())) {
      try {
        TaskStatus status;
        while ((status = tsqa.getStatus(taskId).get()).isRunnable()) {
          if (System.currentTimeMillis() > startTime + 10 * 1000) {
            throw new ISE("Where did the task go?!: %s", task.getId());

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public class TaskAnnouncementTest
{
  @Test
  public void testBackwardsCompatibleSerde() throws Exception
  {
    final Task task = new RealtimeIndexTask(
        "theid",
        new TaskResource("rofl", 2),
        null,
        new Schema("foo", null, new AggregatorFactory[0], QueryGranularity.NONE, new NoneShardSpec()),
        null,
        null,
        new Period("PT10M"),
        1,
        Granularity.HOUR,
        null,
        null
    );
    final TaskStatus status = TaskStatus.running(task.getId());
    final TaskAnnouncement announcement = TaskAnnouncement.create(task, status);


    final ObjectMapper jsonMapper = new DefaultObjectMapper();
    final String statusJson = jsonMapper.writeValueAsString(status);
    final String announcementJson = jsonMapper.writeValueAsString(announcement);

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io.druid.indexing.overlord.TaskLifecycleTest

io.druid.indexing.overlord.TaskLockbox

io.druid.indexing.overlord.ThreadPoolTaskRunner

io.druid.indexing.worker.executor.ExecutorLifecycle

io.druid.indexing.worker.TaskAnnouncementTest

io.druid.indexing.worker.WorkerTaskMonitor

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