Re: how to write outputs sequentially?

[Shi Yu]

I guess you need to define a Partitioner to send hased keys to different 
reducers (sorry, I am still using the old API so probably there is 
something new in the trunk release).  Basically you try to segment the 
keys into different zones, 0-10, 11-20, ...

maybe check the hashCode() function and see how to categorize these zones?
Shi


On 3/22/2011 9:24 AM, JunYoung Kim wrote:
hi,

I run almost 60 ruduce tasks for a single job.

if the outputs of a job are from part00 to part 59.

is there way to write rows sequentially by sorted keys?

curretly my outputs are like this.

part00)
1
10
12
14

part 01)
2
4
6
11
13

part 02)
3
5
7
8
9

but, my aim is to get the following results.

part00)
1
2
3
4
5

part01)
6
7
8
9
10

part02)
11
12
13
14
15

the hadoop is able to support this kind of one?

thanks