how to access Mapper Counter value in a Reducer?

Question

I want to acces the myCounter.my value in reducer :

public static class Map extends Mapper

        

Answer 1

You to make it work for new API by accessing the counters via job object.

Configuration conf = context.getConfiguration();
Cluster cluster = new Cluster(conf);
Job currentJob = cluster.getJob(context.getJobID());
long val=currentJob.getCounters().findCounter(myCounter.my).getValue();

Answer 2

You can access as follows:

Map.myCounter.my // static fields you can access by it's class name.

Answer 3

You can access your counter value in reducer using the same code

Counter counter = context.getCounter( myCounter.my );
        counter.getValue();

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