There are so many sub-projects in the JIRA source code, is there some documents to explain what's purpose of every sub-project?
And how to debug the JIRA source code in local machine?
There isn't a document that explains each of the subfolders, etc in the JIRA Source Code but that would be beneficial. You can help get that created by going to https://jira.atlassian.com/secure/Dashboard.jspa and creating a feature request to have the developers publish and article such as the one you're seeking.
In regards to debugging JIRA, there are two articles that may help you:
Creating a Remote Debug Target
Wow, I got swamped and now that I've finally gotten my head back above water, I find we have several new members! Welcome @Darren Keith lowman , @Amanda Babb , @Luis Zapata , @Joli Holmes , and @bh...
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