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? -- Best regards,
