Hi Brian,
The CAT_A and CAT_B keys will be processed by different reducer
instances, so they run independently and may run in any order. What's
the output that you're trying to get?
Cheers,
Tom
On Thu, Jan 22, 2009 at 3:25 PM, Brian MacKay
<brian.mac...@medecision.com> wrote:
> Hello,
>
>
>
> Any tips would be greatly appreciated.
>
>
>
> Is there a way to set the order of the keys in reduce as shown below, no
> matter what order the collection in MAP occurs in.
>
>
>
> Thanks, Brian
>
>
>
>
>
> public void map(WritableComparable key, Text values,
>
> OutputCollector<Text, Text> output, Reporter reporter)
> throws IOException {
>
>
>
> //collect many CAT_A and CAT_B in random order
>
> output.collect(CAT_A, details);
>
> output.collect(CAT_B, details);
>
>
>
> }
>
>
>
>
>
>
>
> public void reduce(Text key, Iterator<Text> values,
>
> OutputCollector<Text, Text> output, Reporter
> reporter) throws IOException {
>
>
>
> //always reduce CAT_A first, then reduce CAT_B
>
>
>
> }
>
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