9. The machine-readable media of claim 8 , wherein the two or more generated digital fingerprints are generated from transaction event entries that include serial transaction data associated with the two or more nodes, said program code to associate the two or more digital fingerprints into a fault event set further comprising program code to: comparatively process a series of the transaction event entries to determine an activity divergence event; and in response to detecting an activity divergence event associated with a next transaction event entry, exclude a digital fingerprint generated for the next transaction event entry from the fault event set.
10. The machine-readable media of claim 9 , further comprising program code to: generate diagnostic digital fingerprints for each the one or more event classification sets; and determine a causal property for the fault event set based on regression processing of the associated digital fingerprints with respect to the diagnostic digital fingerprints.