【急、求助】Hadoop Job执行进度的百分比

请问有没有办法通过Java程序获取Map/Reduce执行进度的百分比
就像以下这些信息：
12/11/16 21:13:14 INFO mapred.JobClient: Running job: job_201211162111_0001
12/11/16 21:13:15 INFO mapred.JobClient:  map 0% reduce 0%
12/11/16 21:13:24 INFO mapred.JobClient:  map 100% reduce 0%
12/11/16 21:13:30 INFO mapred.JobClient:  map 100% reduce 10%
12/11/16 21:13:39 INFO mapred.JobClient:  map 100% reduce 30%
12/11/16 21:13:42 INFO mapred.JobClient:  map 100% reduce 50%
12/11/16 21:13:48 INFO mapred.JobClient:  map 100% reduce 70%
12/11/16 21:13:51 INFO mapred.JobClient:  map 100% reduce 90%
12/11/16 21:13:57 INFO mapred.JobClient:  map 100% reduce 100%
12/11/16 21:13:59 INFO mapred.JobClient: Job complete: job_201211162111_0001
              
               
               

            有
org.apache.hadoop.mapreduce.Job.mapProgress()
org.apache.hadoop.mapreduce.Job.reduceProgress()
http://hadoop.apache.org/docs/current/api/org/apache/hadoop/mapreduce/Job.html

beowulf2005 发表于 2013-10-16 13:41
有
org.apache.hadoop.mapreduce.Job.mapProgress()
org.apache.hadoop.mapreduce.Job.re ...

怎么用？在 hadoop2.x中