nosql - how Cassandra chooses the coordinator node and the replication nodes? -


how cassandra client chooses coordinator node? coordinator node stores data sent client before replicating?

the coordinator node typically chosen algorith takes "network distance" account. node can act coordinator, , @ first requests sent nodes driver knows about. once connects , understands topology of cluster, may change "closer" coordinator.

the coordinator stores data locally (on write) if ends being 1 of nodes responsible data's token range.


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