Pedro,
Job tracker is there just to invoke the job or submit the job. It doesn't play
any role in split and map. Here in your question mapper play a role to get
splits.
Thanks
Sent from my BlackBerry, pls excuse typo
-Original Message-
From: Pedro Costa
Date: Wed, 7 Mar 2012 13:57:28
Are you asking who assigns the task to HostB or who makes sure a task assigned
to HostB reads from HostB's local copy?
The first is the job tracker. The second is the DFSClient used by the task.
-Joey
On Mar 7, 2012, at 7:57, Pedro Costa wrote:
> Hi,
>
> In MapReduce, if the locations of th
