If a record has 100 bins, and a client changed one bin. How this change is replicated to another node of the cluster, and to remote cluster through XDR. I am interested to know whether this single bin is transferred or the entire record is.
The other question is that it looks LDT are not supported by backup/restore and XDR tool. But LDT are replicated right? Same question is that for a large list, is single sub-record the unit to sync between nodes?
For any change in a record, the entire record is updated. So for both XDR and prole/replica write, entire record will be updated.
Yes, LDT/LLIST do have the replica copy.
Not sure about the unit of record for sync between two nodes, I would let @raj clarify that, but my guess would be it is sub-records which are updated between the writes across nodes.