http://wiki.apache.org/hadoop/HowToContribute is the best place to start. Checking the code in through git will not trigger a jenkins build, unless you have a special setup that goes beyond Apache provides. You do not need to compile the entire tree to get Map/Reduce, but typically it is not a big deal to compile everything.
--Bobby Evans On 5/8/12 11:50 PM, "Radim Kolar" <h...@filez.com> wrote: I am interested in working on mapreduce package, so not sure if I need to compile the whole tree. I work on branch-0.23. It can be just imported into SpringToolsSuite, then click on Run -> Maven -> type in 'compile' target. It compiles module it just fails on Avro stuff. But it is good enough that you can edit it in Eclipse with some comfort. Then just commit to git and let Jenkins on Unix to build it for you.
