This feature bundles all available recovery techniques for the monolithic version of Odysseus. Among other things it contains techniques for a Gap Recovery (at-most once), a Rollback Recovery (at-least-once) and a Precise Recovery (exactly once).
Documentation under progressAll three classes of recovery techniques ensure that Odysseus continues the data stream processing after a restart, but they differ in their completeness and correctness guarantees. To achieve completeness respectively correctness, the rollback and the precise recovery need additional plug-ins: an external application, Backup of Data Streams (BaDaSt), and Checkpointing.