reconfigure number of map/reduce slots per machine without restart

[Xiangping Bu <xi...@gmail.com>]

Hi, All

Is that possible to reconfigure the number of map/red slots per
machine without restarting the Hadoop cluster?

Thanks

Xiangping

Re: reconfigure number of map/reduce slots per machine without restart

[Anthony Urso <an...@cs.ucla.edu>]

No, you have to restart the job and task trackers for that setting to
take effect.

On Sat, Aug 13, 2011 at 3:36 PM, Xiangping Bu <xi...@gmail.com> wrote:
> Hi, All
>
> Is that possible to reconfigure the number of map/red slots per
> machine without restarting the Hadoop cluster?
>
> Thanks
>
> Xiangping
>

Re: reconfigure number of map/reduce slots per machine without restart

[Harsh J <ha...@cloudera.com>]

Yes, just restart the TaskTracker. There's no need to restart your
JobTracker, so a rolling TT reconfigure+restart should get you going.

P.s. general@ is for project wide general discussions, not user
specific queries, which should go to mapreduce-user@ instead. Moving
it there, with you as a recipient.

(Bcc'd general@)

On Sun, Aug 14, 2011 at 4:06 AM, Xiangping Bu <xi...@gmail.com> wrote:
> Hi, All
>
> Is that possible to reconfigure the number of map/red slots per
> machine without restarting the Hadoop cluster?
>
> Thanks
>
> Xiangping
>



-- 
Harsh J

Re: reconfigure number of map/reduce slots per machine without restart

[Harsh J <ha...@cloudera.com>]

Yes, just restart the TaskTracker. There's no need to restart your
JobTracker, so a rolling TT reconfigure+restart should get you going.

P.s. general@ is for project wide general discussions, not user
specific queries, which should go to mapreduce-user@ instead. Moving
it there, with you as a recipient.

(Bcc'd general@)

On Sun, Aug 14, 2011 at 4:06 AM, Xiangping Bu <xi...@gmail.com> wrote:
> Hi, All
>
> Is that possible to reconfigure the number of map/red slots per
> machine without restarting the Hadoop cluster?
>
> Thanks
>
> Xiangping
>



-- 
Harsh J