Anytime, you can write your own key-classes which implements WritableComparable interface, and you can sort you key in any way you want. In fact, Hadoop MapReduce code have provide some frequently-used key-classes, such as BytesWritable, IntWritable, LongWritable, etc.
Please study the code, you will get more. On Tue, Mar 24, 2009 at 12:15 AM, tim robertson <timrobertson...@gmail.com>wrote: > If Akira was to write his/her own Mappers, using types like > IntWritable would result in it being numerically sorted right? > > Cheers, > Tim > > > > > On Mon, Mar 23, 2009 at 5:04 PM, Aaron Kimball <aa...@cloudera.com> wrote: > > Simplest possible solution: zero-pad your keys to ten places? > > > > - Aaron > > > > On Sat, Mar 21, 2009 at 11:40 PM, Akira Kitada <akit...@gmail.com> > wrote: > > > >> Hi, > >> > >> By default Hadoop does ASCII sort the mapper's output, not numeric sort. > >> However, I often want the framework to sort > >> records in numeric order. > >> Can I make the framework to do numeric sort? > >> (I use Hadoop Streaming) > >> > >> Thanks, > >> > >> Akira > >> > > >
