centerqi hu 2012-10-07, 13:56
-Re: What is the difference between Rack-local map tasks and Data-local map tasks?
Rack local means that while the data isn't local to the node running the task, it is still on the same rack.
(Its meaningless unless you've set up rack awareness because all of the machines are on the default rack. )
Data local means that the task is running local to the machine that contains the actual data.
On Oct 7, 2012, at 8:56 AM, centerqi hu <[EMAIL PROTECTED]> wrote:
> hi all
> When I run "hadoop job -status xxx",Output the following some list.
> Rack-local map tasks=124
> Data-local map tasks=6
> What is the difference between Rack-local map tasks and Data-local map tasks?
> [EMAIL PROTECTED]|Sam
centerqi hu 2012-10-07, 15:28
Bertrand Dechoux 2012-10-07, 19:31
paritosh ranjan 2012-10-07, 19:49
Harsh J 2012-10-07, 22:46
Michael Segel 2012-10-08, 00:13
Bertrand Dechoux 2012-10-08, 05:44
Bejoy KS 2012-10-07, 18:29
pengwenwu2008 2012-12-13, 06:22