HI all, I have a handy utility that will verify DNS settings in a cluster. https://github.com/sujee/hadoop-dns-checker
- It is written in pure Java; doesn't use any third party libraries. So it is very easy to compile and run. - it does both IP lookup and reverse DNS lookup - will also check if machine's own hostname resolves correctly - it can run on a single machine - it can run on machines across cluster (using password-less ssh) would love to get some feedback from others... Also have a small tutorial on this subject here : http://sujee.net/tech/articles/hadoop/hadoop-dns/ regards Sujee http://sujee.net
