Re: TaskInProgress

[Amar Kamat]

TaskInProgress is the data structure used by 
JobTracker/JobInProgress to keep task (map/reduce) 
related information together since for each map/reduce task there can be 
multiple attempts. This structure is more complex and holds generic 
task-level information like number of attempts, 
failures, hosts where executed, hosts where the split resides etc.
While TaskTracker.TaskInProgress is the data structure used by 
the TaskTracker for tracking map/reduce attempts. This is a simple 
structure used to keep track of the local tasks 
at TaskTracker (mostly for task execution metrics). In short 
TaskInProgress is used to represent each map/reduce task while 
TaskTracker.TaskInProgress is used to represent the attempt 
for each map/reduce task.
Amar
On Sat, 1 Mar 2008, Ahmad Humayun wrote:

Hello there,
Whats the difference b/w the TaskInProgress class and the
TaskTracker.TaskInProgress (the inner class)?

thanks for bearing with my stupid question :)


regards,