I am just curious to know when Cassandra doc says the atomicity and
isolation is guaranteed for a row.
Does it mean, two requests updating a row- "R1" at different replica will
be candidate for atomicity and isolation?

For instance , I have a setup where RF is 2
I have a client application where two requests of updating a particular row
#R1 goes to two coordinator nodes at same time.
Row "R1" has presence in nodes - N1, N2 (since RF is 2)
Does Cassandra ensure atomicity & isolation across replicas/partition for a
particular row? If so , then how does it get handled does Cassandra follows
2 Phase commit txn for a row or Cassandra uses distributed lock for a row?


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