Hello everyone, I would like to ask what is the easiest way to build and deploy Hadoop. I am trying to add some new features to the Hadoop but every time I make any small change (while debugging) I have to execute:
ant clean compile jar than upload the build/hadoop-0.20.1-dev-core.jar file to the cluster and distribute it to every node. This already takes approx 2 minutes. In addition the Hadoop does not pick up the new core file and I have to reboot the whole cluster. And rebooting the whole cluster takes several minutes. So it is very frustrating when after 5+ minutes I got some stupid NullPointerException and I need to fix it and wait another 5+ minutes to see another Exception. Is there any other way how to speed up the process? Thank you for every comment. Roman PS: I am using Hadoop 0.20.0
