Yes you can sort it in desc, you simply specify a boolean value in the
second argument to the sortBy function. Default is ascending.
So it will look like:

rdd.sortBy(_._2, false)


Read more over here
<http://spark.apache.org/docs/latest/api/scala/#org.apache.spark.rdd.RDD>

Thanks
Best Regards

On Fri, Nov 7, 2014 at 12:20 AM, SK <skrishna...@gmail.com> wrote:

> Hi,
>
> I am using rdd.sortBy(_._2) to get an RDD sorted by value. The default
> order
> is ascending order. How can I get it sorted  in descending order? I could
> not find an option to specify the order.
>
> I need to get the top K elements of the list sorted in descending order. If
> there is no option to get the descending order, I would like to know if
> there is a way to get the last K elements of the list sorted in ascending
> order.  take(k) gets the first k elements, is there an option to get the
> last K elements of an RDD ?
>
> thanks
>
>
>
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