What if I’m not using a Task Repository?
Mylyn does not require the use a of a task repository and can be used entirely with the Local Tasks repository that it comes bundled with. However, if working with a team, a shared Task Repository provides the key infrastructure needed to let your team work in a Task-Focused way via Mylyn’s collaborative facilities. Those not currently using another supported Task Repository should consider the repositories currently supported by Mylyn as well as those supported by the third party Mylyn extensions.