No, no it wasn't. He had even told Piphron as such himself. However, he assured the old crab that we would do everything in his power to keep that promise.

"They took us by surprise," Obi-Wan agreed. "We just have to make sure we are not caught off guard again."

The Jedi then nodded at Anakin's question.

"Yes, its only a matter of time. But no one, not even the Arehtei, know when or where he will be reborn."