I am using Yarn, and
1 - I want to know the average IO throughput of the HDFS (like know how
fast the datanodes are writing in a disk) so that I can compare beween 2
HDFS intances. The command "hdfs dfsadmin -report" doesn't give me that.
The HDFS has a command for that?
2 - and there is a similar thing to know how fast the data is being
transferred between map and reduces?
Bhasker Allene 2013-06-12, 09:08