| Name | Description | Type | Package | Framework |
| FieldTypeInfo | Represents a type information for a field, which is made up of its ID (name) and its type (a TypeID object). | Class | org.apache.hadoop.record.meta | Apache Hadoop |
| MapTypeID | Class | org.apache.hadoop.record.meta | Apache Hadoop | |
| RecordTypeInfo | A record's Type Information object which can read/write itself. | Class | org.apache.hadoop.record.meta | Apache Hadoop |
| StructTypeID | Class | org.apache.hadoop.record.meta | Apache Hadoop | |
| TypeID | Represents typeID for basic types. | Class | org.apache.hadoop.record.meta | Apache Hadoop |
| Utils | Various utility functions for Hadooop record I/O platform. | Class | org.apache.hadoop.record.meta | Apache Hadoop |
| VectorTypeID | Represents typeID for vector. | Class | org.apache.hadoop.record.meta | Apache Hadoop |