DSE Advanced Replication terminology
This terminology is specific to DSE Advanced Replication that supports distributed data replication from a DataStax Enterprise source cluster to a destination cluster.
- collection agent
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The process thread that runs on the source cluster that captures the incoming changes and populates the replication log.
- destination cluster
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The cluster to which the data flow is going from the source cluster.
- source cluster
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A cluster that primarily sends data to one or more destination clusters. DSE Advanced Replication must be enabled on the source cluster.
- source datacenter
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A datacenter of a source cluster.
- destination cluster
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A cluster that generally supports one or more source clusters that replicate data to the destination cluster. DSE Advanced Replication is not required on the destination cluster.
- destination datacenter
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A datacenter of a destination cluster.
- isolated
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The state of a cluster when there is not a live connection between the source cluster and the destination cluster.
- replication agent
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The process thread that runs on the source cluster that reads data from the replication log and transmits that data to the destination cluster.
- replication channel
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A defined channel of change data between source clusters and destination clusters. A replication channel is defined by the source cluster, source keyspace, source table name, destination cluster, destination keyspace, and destination table name.
- replication channel priority
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The priority order of which replication channel has precedence when limited bandwidth occurs between the source cluster and the destination cluster.
- replication log
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The replication log on the source cluster stores data in preparation for transmission to the destination cluster.
- tethered
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The state when there is a live connection between the source cluster and the destination cluster.
