On Dec 22, 2011, at 4:00 PM, Adam Fuchs wrote: > Timestamp doesn't usually make > it into the uniqueness concept, from a user's perspective, even though that > affects the sort order of Keys. In fact, most users let Accumulo set the > timestamp for them. I think your definition of uniqueness takes timestamp > into account, and from that perspective what we're doing is sort of like > providing a finer grained timestamp instead of using one timestamp for an > entire Mutation (or for all Mutations that show up within a millisecond).
Timestamps do define separate keys. This is not just my definition - this is in the BigTable design as well as Hbase's, and likely every other BigTable clone.
