huanchen.zhang 2012-06-11, 13:10
-Re: only ouput values, no keys, no reduce
Mark Kerzner 2012-06-11, 13:13
You can use Hadoop NullWritable
On Mon, Jun 11, 2012 at 8:10 AM, huanchen.zhang
> I am developing a map reduce program which has no reduce. And I just want
> the maps to output all the values which meet some requrements (no keys
> what should I do in this case? I tried context.write(Text, Text), but it
> outputs both keys and values.
> Thank you !
顾晟 2012-06-12, 10:42