How do I setup Hudson so that if one person triggers a build, Hudson will put it on the queue and wait lets say 2 minutes, and during those 2 minutes if another build is triggered it will replace the older build on the queue with the new build?
This way if there are 2 builds in those 2 minutes, Hudson will only perform the last build.
Under Manage Hudson, set the Quiet Period.
If set, a newly scheduled build waits for this many seconds before actually being built. This is useful for:
Collapsing multiple CVS change notification e-mails into one (some CVS changelog e-mail generation scripts generate multiple e-mails in quick succession when a commit spans across directories).
If your coding style is such that you commit one logical change in a few cvs/svn operations, then setting a longer quiet period would prevent Hudson from building it prematurely and reporting a failure.
Throttling builds. If your Hudson installation is too busy with too many builds, setting a longer quiet period can reduce the number of builds.
If not explicitly set at project-level, the system-wide default value is used.