DecodeInt decodes value encoded by EncodeInt before.

IsPureTableID return true iff b is consist of tablePrefix and 8-byte tableID.

NewNamespace creates a new namespace.

NewTableNamespaceClassifier creates a new namespace classifier that classifies stores and regions by table range.

DefaultIDDecoder is the default decoder.

Namespace defines two things: 1.

IDDecoder defines method to extract tableID from key.

Key represents high-level Key type.