Hi,
I have a similar query.
Infact, I sent it yesterday and waiting for anybody's response who might
have done it.
Thanks,
Anurag Tangri
2011/11/30 rabbit_cheng <rabbit_ch...@126.com>
> I have created a counter in mapper to count something, I wanna get the
> counter's value in reducer phase, the code segment is as follow:
>
> public class MM extends Mapper<LongWritable, Text, Text, Text> {
> static enum TEST{ pt }
> @Override
> public void map(LongWritable key, Text values, Context context) throws
> IOException, InterruptedException {
> context.getCounter(TEST.pt).increment(1);
> }
> }
> public class KMeansReducer extends Reducer<Text, Text, Text, Text> {
> @Override
> protected void setup(Context context) throws IOException,
> InterruptedException {
> long ptValue=context.getCounter(MM.TEST.pt <http://mm.test.pt/>
> ).getValue();
> }
> }
> but what I get is always 0, i.e., the value of variable ptValue is always
> 0.
> Does anybody know how to access a mapper counter in reducer?
>
>
>
>
