public AbstractPrimitiveWritableObjectInspector getObjectInspector() {
    return PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(TypeInfoFactory.getPrimitiveTypeInfo(
        typeInfo.getTypeName()));
  }
Kafka metadata columns list that indicates the order of appearance for each column in final row.
kafka-handler/src/java/org/apache/hadoop/hive/kafka/MetadataColumn.java