| DRTML |
YAML step contract + fragments |
| Step / domain |
Independently packaged transform code |
| ProcessResult |
Processor output: logical output keys, rows, stats, and status |
| StoragePlan |
Compiled datasets/bindings plan |
| WorkUnit |
Feed unit for partition_loop |
| Backend |
datasets.*.backend sink/source |
| Binding |
local/S3 root for object keys |
| Wide list |
list field → set of wire columns |
| Mapping |
Merge id spaces / artifacts |
| Reduce merge |
Aggregate partial outputs |
| Embed train |
Stateful W training |
| Saturation |
Vocab fill / homogeneity metrics |
| contracts |
Neutral DTOs between layers |
| Registry (dataset) |
kind: registry vocab + checkpoint metrics |
| Registry (code) |
backend / mode / metric method catalogs |