# Uses of Class
org.apache.lucene.replicator.nrt.Node

- ## Uses of Node in org.apache.lucene.replicator.nrt

  Subclasses of Node in org.apache.lucene.replicator.nrt
  Modifier and Type
  Class
  Description
  `class`
  `PrimaryNode`
  Node that holds an IndexWriter, indexing documents into its local index.
  `class`
  `ReplicaNode`
  Replica node, that pulls index changes from the primary node by copying newly flushed or merged index files.