Configuring time synchronization across all nodes
All Cassandra nodes and other nodes that communicate with or are referenced by Cassandra nodes must be in synchronization in time with each other.
Cassandra is a distributed database. All write operations, including the delete operation in Cassandra are serialized by time stamps. The time stamps are generated on a B2Bi or Global Mailbox node.
If the B2Bi or Global Mailbox client nodes and Cassandra nodes are not synced in time with each other, deleted data might be seen in the servers or updates to the nodes might be ignored.