size of data received in mapper and reducer

Hi, We are running mapreduce over hbase table. so mapper takes each region as mapper input. Is there any way to get the size of data received in both mapper and reducer in hadoop.? Thanks -- View this message in context:

Hadoop source code in eclipse

Hi...I want to debug Map-reduce jobs (pig,hive) using eclipse. That is, to set break points in the hadoop source java file and to inspect the elements while running map-reduce jobs. To do this, I started all the services using eclipse and I can debug some class files. But I cant create an entire

Hadoop namenode high availability

Hai...In name node high availability, from documentation, it states that each of the NameNode machines in the cluster maintains a persistent session in ZooKeeper. If the machine crashes, the ZooKeeper session will expire, notifying the other NameNode that a failover should be triggered