Hello, I have set up multiple datanodes on a single machine following the instructions in http://mail-archives.apache.org/mod_mbox/hadoop-common-user/201009.mbox/%3ca3ef3f6af24e204b812d1d24ccc8d71a03688...@mse16be2.mse16.exchange.ms%3E So i see 2 datanodes up and running when i run jps command. The machine on which i set this 2 datanode hadoop is very powerful - means it has 96 cores . But still i dont get significant performance from 2 datanodes . How do i make sure 2 datanodes are being used. Or why does performance fail with 2 datanodes on same machine even when i work on a powerful machine?
Because before tweaking hadoop with those mapped properties to improve performance, i want know if i get any performance from 2 datanodes(since i am working on a powerful server) Any of your advices would be helpful.
