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Class org.apache.hadoop.mapred.TaskTracker

Added Methods
void done(TaskAttemptID, boolean) The task is done.
void fsError(TaskAttemptID, String) A child task had a local filesystem error.
TaskCompletionEvent[] getMapCompletionEvents(JobID, int, int)  
Task getTask(TaskAttemptID) Called upon startup by the child process, to fetch Task data.
void mapOutputLost(TaskAttemptID, String) A completed map task's output has been lost.
boolean ping(TaskAttemptID) Child checking to see if we're alive.
void reportDiagnosticInfo(TaskAttemptID, String) Called when the task dies before completion, and we want to report back diagnostic info
void shuffleError(TaskAttemptID, String) A reduce-task failed to shuffle the map-outputs.
boolean statusUpdate(TaskAttemptID, TaskStatus) Called periodically to report Task progress, from 0.0 to 1.0.