Hi, We have a large codebase written in Hadoop 0.19.1 and we are currently in the process of deciding whether we should migrate to 0.20 or not in a short time period. I tried to search for some performance evaluations in between the two versions but I didn't find anything really useful. Did someone do any such comparison tests or do you know if there is a big performance increase in the latest version? I basically want to have a general idea about how much we can gain by migrating to the latest version by doing lots of changes in our codebase.
Thanks in advance, Jim
