hadoop计数器

context.getCounter("ssx", "demo1").increment(1);
context.getCounter("ssx", "demo2").increment(2);

CounterGroup group=  job.getCounters().getGroup("ssx");
Iterator<Counter> iterator=  group.iterator();
while (iterator.hasNext())
     {
           Counter counter = (Counter) iterator.next();
           System.out.println(counter.getName()+":::"+counter.getValue());
       }
System.out.println("++++++++++++++++++++++");
Counter counters=job.getCounters().findCounter("ssx", "demo1"); 
long value=counters.getValue();//
System.out.println("demo1的值"+value);