Logically: represents a `unit of work` of external data ingestion into a target def~dataset def~table; a set of `hudi` records.
Physically: represents a list of delta/log files (in `Avro` format) representing the external data differences / deltas not yet merged in the target def~dataset def~table.
- timeline instantdef~timeline
- commit def~commit-time
- storage def~table-type
- def~Mergedef~merge-On-ReadCopy-On-Writeon-read (MOR)
- def~copy-on-write (COW)