/**
* Given the reduce taskAttemptID, returns the TaskAttemptInfo. Deconstructs the reduce
* taskAttemptID and looks up the jobStory with the parts taskType, id of task, id of task
* attempt.
*
* @param taskTracker tasktracker
* @param taskAttemptID task-attempt
* @return TaskAttemptInfo for the reduce task-attempt
*/
private TaskAttemptInfo getReduceTaskAttemptInfo(
TaskTracker taskTracker, TaskAttemptID taskAttemptID) {
assert (!taskAttemptID.isMap());
TaskID taskId = taskAttemptID.getTaskID();
TaskType taskType;
if (taskAttemptID.isMap()) {
taskType = TaskType.MAP;
} else {
taskType = TaskType.REDUCE;
}
TaskAttemptInfo taskAttemptInfo =
jobStory.getTaskAttemptInfo(taskType, taskId.getId(), taskAttemptID.getId());
if (LOG.isDebugEnabled()) {
LOG.debug(
"get an attempt: "
+ taskAttemptID.toString()
+ ", state="
+ taskAttemptInfo.getRunState()
+ ", runtime="
+ ((taskAttemptID.isMap())
? taskAttemptInfo.getRuntime()
: ((ReduceTaskAttemptInfo) taskAttemptInfo).getReduceRuntime()));
}
return taskAttemptInfo;
}
/**
* Given the map taskAttemptID, returns the TaskAttemptInfo. Deconstructs the map's taskAttemptID
* and looks up the jobStory with the parts taskType, id of task, id of task attempt.
*
* @param taskTracker tasktracker
* @param taskAttemptID task-attempt
* @return TaskAttemptInfo for the map task-attempt
*/
@SuppressWarnings("deprecation")
private synchronized TaskAttemptInfo getMapTaskAttemptInfo(
TaskTracker taskTracker, TaskAttemptID taskAttemptID) {
assert (taskAttemptID.isMap());
JobID jobid = (JobID) taskAttemptID.getJobID();
assert (jobid == getJobID());
// Get splits for the TaskAttempt
RawSplit split = splits[taskAttemptID.getTaskID().getId()];
int locality = getClosestLocality(taskTracker, split);
TaskID taskId = taskAttemptID.getTaskID();
if (!taskId.isMap()) {
assert false : "Task " + taskId + " is not MAP :";
}
TaskAttemptInfo taskAttemptInfo =
jobStory.getMapTaskAttemptInfoAdjusted(taskId.getId(), taskAttemptID.getId(), locality);
if (LOG.isDebugEnabled()) {
LOG.debug(
"get an attempt: "
+ taskAttemptID.toString()
+ ", state="
+ taskAttemptInfo.getRunState()
+ ", runtime="
+ ((taskId.isMap())
? taskAttemptInfo.getRuntime()
: ((ReduceTaskAttemptInfo) taskAttemptInfo).getReduceRuntime()));
}
return taskAttemptInfo;
}
