Neo4j REST API List All Labels returns labels when graph is empty?

Question

I'm currently working on a REST API wrapper for Neo4j written in node.js.

Why does the REST API return labels of nodes that are removed? Can I get all labels of existing nodes?

Code can be found at: https://github.com/Stofkn/node-neo4j (main.js method listAllLabels)

Answer 1

Labels are part of the database metainformation. They will not be cleaned when the node is removed.

Those labels are also attached to other kinds of meta-info, like indexes etc.