>From 2 to 4, the performance increase sub-linearly, however from 4 to 8, it
seems super-linear.
Is it caused by some disk contention bottleneck?
2013/9/6 牛兆捷
> Hi all：
>
> I vary the computational nodes of cluster and get the speedup result in
> attachment.
>
> In my
> More nodes should process more data in the same amount of time.
>
> Thanks,
> +Vinod
>
> On Sep 6, 2013, at 8:27 AM, 牛兆捷 wrote:
>
> > Hi all：
> >
> > I vary the computational nodes of cluster and get the speedup result in
> attachment.
> >
> > I
much skew
> to your data.
>
> --Bobby
>
> On 9/7/13 3:33 AM, "牛兆捷" wrote:
>
> >But I still want to fine the most efficient assignment and scale both data
> >and nodes as you said, for example in my result, 2 is the best, and 8 is
> >better than 4.
> &
great~
Thanks Steve
2014/1/3 Steve Loughran
> For new committers and for the curious, I've just stuck up a screen capture
> with commentary on how to commit a patch to the Hadoop SVN repository
>
> http://youtu.be/txW3m7qWdzw
>
> It's 27 minutes long, not just because of the commentary but bec
