Debugging is a vital (and easy-to-use) feature that lets you see
exactly what data was passed along any edge in a graph.
Note: When debugging an Integrator ETL graph, keep in mind that all
components in the same phase run in parallel and are multi-threaded. Therefore,
make sure you start with components that are flagged as errors (

) and not with warnings (

), even if the warnings appear to occur logically
before the errors.
To debug a graph: