leader node

A single node in a cluster of MDEX Engine nodes responsible for processing queries and for receiving updates to the index and to the configuration. This node is responsible for obtaining information about the latest index and propagating this information to the follower nodes through the Cluster Coordinator.

Each cluster must have one and only one leader node. All nodes must have write access to a shared file system on which the MDEX Engine index is stored. The modules outside the cluster of MDEX Engine nodes, (such as connectors in the Latitude Data Integrator and components in Latitude Studio), must have access to the leader node.

See also follower node and cluster.