Does Cassandra make any guarantees on the outcome of a scenario like this: Two clients insert the same key/colum with different values at the same time:
client A does insert(keyspace, key_1, column_name_1, value_A, timestamp_1, consistency_level.QUORUM) client B does insert(keyspace, key_1, column_name_1, value_B, timestamp_1, consistency_level.QUORUM) After that, both clients read their value: client A does get(keyspace, key_1, column_name_1, consistency_level.QUORUM) client B does get(keyspace, key_1, column_name_1, consistency_level.QUORUM) It is obvious that since the insert happens 'at the same time', i.e. with the same timestamp, we cannot say which value (value_A or value_B) gets written to the row. However, do we have a guarantee that either value_A or value_B is written, and that both read operations will return the same result? Or might there be a (short-timed?) race conditions where both get() operations will return different results (typically value_A for client_A, value_B for client_B)? -Roland
