Jedi Quest: The Trail of the Jedi

The Trial of the Jedi is the second in a series of young reader novels that chronicle the adventures of Obi-Wan Kenobi and Anakin Skywalker between Star Wars Episode I: The Phantom Menace and Star Wars Episode II: Attack of the Clones.

Publisher's Summary
Anakin begins to question his Master's commitment. He knows Obi-Wan never chose him as his apprentice, but rather it was the dying wish of the late Qui-Gon. Obi-Wan, too, has his doubts. The two had best not concentrate on their anxieties, and instead focus on a deadly group of bounty hunters out to capture the Jedi.