## Uses of Class
org.apache.hadoop.mapred.TaskAttemptID

Packages that use TaskAttemptID
org.apache.hadoop.mapred: A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.

Uses of TaskAttemptID in org.apache.hadoop.mapred

Methods in org.apache.hadoop.mapred that return TaskAttemptID
`static TaskAttemptID` `TaskAttemptID.downgrade(TaskAttemptID old)` Downgrade a new TaskAttemptID to an old one
`static TaskAttemptID` `TaskAttemptID.forName(String str)` Construct a TaskAttemptID object from given string
`TaskAttemptID` `TaskReport.getSuccessfulTaskAttempt()` Get the attempt ID that took this task to completion
`TaskAttemptID` `TaskCompletionEvent.getTaskAttemptId()` Returns task id.
`TaskAttemptID` `TaskAttemptContext.getTaskAttemptID()` Get the taskAttemptID.
`TaskAttemptID` `Task.getTaskID()`
`TaskAttemptID` `TaskStatus.getTaskID()`
`static TaskAttemptID` `TaskAttemptID.read(DataInput in)` Deprecated.

Methods in org.apache.hadoop.mapred that return types with arguments of type TaskAttemptID
`List<TaskAttemptID>` `TaskStatus.getFetchFailedMaps()` Get the list of maps from which output-fetches failed.
`Collection<TaskAttemptID>` `TaskReport.getRunningTaskAttempts()` Get the running task attempt IDs for this task

Methods in org.apache.hadoop.mapred with parameters of type TaskAttemptID
`boolean` `TaskUmbilicalProtocol.canCommit(TaskAttemptID taskid, org.apache.hadoop.mapred.JvmContext jvmContext)` Polling to know whether the task can go-ahead with commit
`boolean` `TaskTracker.canCommit(TaskAttemptID taskid, org.apache.hadoop.mapred.JvmContext jvmContext)` Child checking whether it can commit
`void` `TaskUmbilicalProtocol.commitPending(TaskAttemptID taskId, TaskStatus taskStatus, org.apache.hadoop.mapred.JvmContext jvmContext)` Report that the task is complete, but its commit is pending.
`void` `TaskTracker.commitPending(TaskAttemptID taskid, TaskStatus taskStatus, org.apache.hadoop.mapred.JvmContext jvmContext)` Task is reporting that it is in commit_pending and it is waiting for the commit Response
`void` `TaskTrackerMetricsSource.completeTask(TaskAttemptID t)`
`abstract void` `TaskController.createLogDir(TaskAttemptID taskID, boolean isCleanup)` Creates task log dir
`void` `DefaultTaskController.createLogDir(TaskAttemptID taskID, boolean isCleanup)`
`static void` `TaskLog.createTaskAttemptLogDir(TaskAttemptID taskID, boolean isCleanup, String[] localDirs)` Create log directory for the given attempt.
`void` `TaskUmbilicalProtocol.done(TaskAttemptID taskid, org.apache.hadoop.mapred.JvmContext jvmContext)` Report that the task is successfully completed.
`void` `TaskTracker.done(TaskAttemptID taskid, org.apache.hadoop.mapred.JvmContext jvmContext)` The task is done.
`void` `JobInProgress.failedTask(org.apache.hadoop.mapred.TaskInProgress tip, TaskAttemptID taskid, String reason, TaskStatus.Phase phase, TaskStatus.State state, String trackerName)` Fail a task with a given reason, but without a status object.
`void` `TaskUmbilicalProtocol.fatalError(TaskAttemptID taskId, String message, org.apache.hadoop.mapred.JvmContext jvmContext)` Report that the task encounted a fatal error.
`void` `TaskTracker.fatalError(TaskAttemptID taskId, String msg, org.apache.hadoop.mapred.JvmContext jvmContext)` A child task had a fatal error.
`void` `TaskUmbilicalProtocol.fsError(TaskAttemptID taskId, String message, org.apache.hadoop.mapred.JvmContext jvmContext)` Report that the task encounted a local filesystem error.
`void` `TaskTracker.fsError(TaskAttemptID taskId, String message, org.apache.hadoop.mapred.JvmContext jvmContext)` A child task had a local filesystem error.
`String` `JobTracker.getAssignedTracker(TaskAttemptID taskId)` Get tracker name for a given task id.
`MapTaskCompletionEventsUpdate` `TaskUmbilicalProtocol.getMapCompletionEvents(JobID jobId, int fromIndex, int maxLocs, TaskAttemptID id, org.apache.hadoop.mapred.JvmContext jvmContext)` Called by a reduce task to get the map output locations for finished maps.
`MapTaskCompletionEventsUpdate` `TaskTracker.getMapCompletionEvents(JobID jobId, int fromEventId, int maxLocs, TaskAttemptID id, org.apache.hadoop.mapred.JvmContext jvmContext)`
`static String` `TaskLog.getTaskAttemptLogDir(TaskAttemptID taskID, String cleanupSuffix, String[] localDirs)` Get attempt log directory path for the given attempt-id under randomly selected mapred local directory.
`String[]` `JobTracker.getTaskDiagnostics(TaskAttemptID taskId)` Get the diagnostics for a given task
`String[]` `RunningJob.getTaskDiagnostics(TaskAttemptID taskid)` Gets the diagnostic messages for a given task attempt.
`String[]` `LocalJobRunner.getTaskDiagnostics(TaskAttemptID taskid)` Returns the diagnostic information for a particular task in the given job.
`static File` `TaskLog.getTaskLogFile(TaskAttemptID taskid, boolean isCleanup, TaskLog.LogName filter)`
`boolean` `JobTracker.killTask(TaskAttemptID taskid, boolean shouldFail)`
`void` `RunningJob.killTask(TaskAttemptID taskId, boolean shouldFail)` Kill indicated task attempt.
`boolean` `LocalJobRunner.killTask(TaskAttemptID taskId, boolean shouldFail)` Throws `UnsupportedOperationException`
`static void` `JobHistory.MapAttempt.logFailed(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error)` Deprecated. Use `JobHistory.MapAttempt.logFailed(TaskAttemptID, long, String, String, String)`
`static void` `JobHistory.ReduceAttempt.logFailed(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error)` Deprecated. Use `JobHistory.ReduceAttempt.logFailed(TaskAttemptID, long, String, String, String)`
`static void` `JobHistory.MapAttempt.logFailed(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error, String taskType)` Log task attempt failed event.
`static void` `JobHistory.ReduceAttempt.logFailed(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error, String taskType)` Log failed reduce task attempt.
`static void` `JobHistory.Task.logFailed(TaskID taskId, String taskType, long time, String error, TaskAttemptID failedDueToAttempt)`
`static void` `JobHistory.ReduceAttempt.logFinished(TaskAttemptID taskAttemptId, long shuffleFinished, long sortFinished, long finishTime, String hostName)` Deprecated. Use `JobHistory.ReduceAttempt.logFinished(TaskAttemptID, long, long, long, String, String, String, Counters)`
`static void` `JobHistory.ReduceAttempt.logFinished(TaskAttemptID taskAttemptId, long shuffleFinished, long sortFinished, long finishTime, String hostName, String taskType, String stateString, Counters counter)` Log finished event of this task.
`static void` `JobHistory.MapAttempt.logFinished(TaskAttemptID taskAttemptId, long finishTime, String hostName)` Deprecated. Use `JobHistory.MapAttempt.logFinished(TaskAttemptID, long, String, String, String, Counters)`
`static void` `JobHistory.MapAttempt.logFinished(TaskAttemptID taskAttemptId, long finishTime, String hostName, String taskType, String stateString, Counters counter)` Log finish time of map task attempt.
`static void` `JobHistory.MapAttempt.logKilled(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error)` Deprecated. Use `JobHistory.MapAttempt.logKilled(TaskAttemptID, long, String, String, String)`
`static void` `JobHistory.ReduceAttempt.logKilled(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error)` Deprecated. Use `JobHistory.ReduceAttempt.logKilled(TaskAttemptID, long, String, String, String)`
`static void` `JobHistory.MapAttempt.logKilled(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error, String taskType)` Log task attempt killed event.
`static void` `JobHistory.ReduceAttempt.logKilled(TaskAttemptID taskAttemptId, long timestamp, String hostName, String error, String taskType)` Log killed reduce task attempt.
`static void` `JobHistory.MapAttempt.logStarted(TaskAttemptID taskAttemptId, long startTime, String hostName)` Deprecated. Use `JobHistory.MapAttempt.logStarted(TaskAttemptID, long, String, int, String)`
`static void` `JobHistory.ReduceAttempt.logStarted(TaskAttemptID taskAttemptId, long startTime, String hostName)` Deprecated. Use `JobHistory.ReduceAttempt.logStarted(TaskAttemptID, long, String, int, String)`
`static void` `JobHistory.MapAttempt.logStarted(TaskAttemptID taskAttemptId, long startTime, String trackerName, int httpPort, String taskType)` Deprecated.
`static void` `JobHistory.ReduceAttempt.logStarted(TaskAttemptID taskAttemptId, long startTime, String trackerName, int httpPort, String taskType)` Deprecated.
`static void` `JobHistory.MapAttempt.logStarted(TaskAttemptID taskAttemptId, long startTime, String trackerName, int httpPort, String taskType, org.apache.hadoop.mapred.Locality locality, org.apache.hadoop.mapred.Avataar avataar)` Log start time of this map task attempt.
`static void` `JobHistory.ReduceAttempt.logStarted(TaskAttemptID taskAttemptId, long startTime, String trackerName, int httpPort, String taskType, org.apache.hadoop.mapred.Locality locality, org.apache.hadoop.mapred.Avataar avataar)` Log start time of Reduce task attempt.
`void` `TaskTracker.mapOutputLost(TaskAttemptID taskid, String errorMsg)` A completed map task's output has been lost.
`boolean` `TaskUmbilicalProtocol.ping(TaskAttemptID taskid, org.apache.hadoop.mapred.JvmContext jvmContext)` Periodically called by child to check if parent is still alive.
`boolean` `TaskTracker.ping(TaskAttemptID taskid, org.apache.hadoop.mapred.JvmContext jvmContext)` Child checking to see if we're alive.
`void` `TaskUmbilicalProtocol.reportDiagnosticInfo(TaskAttemptID taskid, String trace, org.apache.hadoop.mapred.JvmContext jvmContext)` Report error messages back to parent.
`void` `TaskTracker.reportDiagnosticInfo(TaskAttemptID taskid, String info, org.apache.hadoop.mapred.JvmContext jvmContext)` Called when the task dies before completion, and we want to report back diagnostic info
`protected void` `Task.reportFatalError(TaskAttemptID id, Throwable throwable, String logMsg)` Report a fatal error to the parent (task) tracker.
`void` `TaskUmbilicalProtocol.reportNextRecordRange(TaskAttemptID taskid, org.apache.hadoop.mapred.SortedRanges.Range range, org.apache.hadoop.mapred.JvmContext jvmContext)` Report the record range which is going to process next by the Task.
`void` `TaskTracker.reportNextRecordRange(TaskAttemptID taskid, org.apache.hadoop.mapred.SortedRanges.Range range, org.apache.hadoop.mapred.JvmContext jvmContext)`
`void` `TaskReport.setSuccessfulAttempt(TaskAttemptID t)` set successful attempt ID of the task.
`void` `TaskCompletionEvent.setTaskID(TaskAttemptID taskId)` Sets task id.
`void` `TaskUmbilicalProtocol.shuffleError(TaskAttemptID taskId, String message, org.apache.hadoop.mapred.JvmContext jvmContext)` Report that a reduce-task couldn't shuffle map-outputs.
`void` `TaskTracker.shuffleError(TaskAttemptID taskId, String message, org.apache.hadoop.mapred.JvmContext jvmContext)` A reduce-task failed to shuffle the map-outputs.
`boolean` `TaskUmbilicalProtocol.statusUpdate(TaskAttemptID taskId, TaskStatus taskStatus, org.apache.hadoop.mapred.JvmContext jvmContext)` Report child's progress to parent.
`boolean` `TaskTracker.statusUpdate(TaskAttemptID taskid, TaskStatus taskStatus, org.apache.hadoop.mapred.JvmContext jvmContext)` Called periodically to report Task progress, from 0.0 to 1.0.
`static void` `TaskLog.syncLogs(String logLocation, TaskAttemptID taskid, boolean isCleanup, boolean segmented)`
`void` `TaskTrackerMetricsSource.taskFailedPing(TaskAttemptID t)`
`void` `TaskTrackerMetricsSource.timedoutTask(TaskAttemptID t)`

Method parameters in org.apache.hadoop.mapred with type arguments of type TaskAttemptID
`void` `TaskReport.setRunningTaskAttempts(Collection<TaskAttemptID> runningAttempts)` set running attempt(s) of the task.

Constructors in org.apache.hadoop.mapred with parameters of type TaskAttemptID
`Task(String jobFile, TaskAttemptID taskId, int partition, int numSlotsRequired)`
`TaskCompletionEvent(int eventId, TaskAttemptID taskId, int idWithinJob, boolean isMap, TaskCompletionEvent.Status status, String taskTrackerHttp)` Constructor.
`TaskStatus(TaskAttemptID taskid, float progress, int numSlots, TaskStatus.State runState, String diagnosticInfo, String stateString, String taskTracker, TaskStatus.Phase phase, Counters counters)`

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