# Package org.apache.ignite.cluster

Contains cluster-related classes.

- Interface Summary
  Interface | Description
  --- | ---
  BaselineNode | Interface representing a single node from baseline topology.
  ClusterGroup | Defines a cluster group which contains all or a subset of cluster nodes.
  ClusterMetrics | This class represents runtime information on a cluster.
  ClusterNode | Interface representing a single cluster node.
  ClusterStartNodeResult | Cluster start node result information.

- Enum Summary
  Enum | Description
  --- | ---
  ClusterState | Cluster states.

- Exception Summary
  Exception | Description
  --- | ---
  ClusterGroupEmptyException | This exception defines illegal call on empty cluster group.
  ClusterTopologyException | This exception is used to indicate error with the cluster topology (e.g., crashed node, etc.).