| Class | Description | 
|---|---|
| ArrowColumnVector | A column vector backed by Apache Arrow. | 
| ColumnarArray | Array abstraction in  ColumnVector. | 
| ColumnarBatch | This class wraps multiple ColumnVectors as a row-wise table. | 
| ColumnarBatchRow | This class wraps an array of  ColumnVectorand provides a row view. | 
| ColumnarMap | Map abstraction in  ColumnVector. | 
| ColumnarRow | Row abstraction in  ColumnVector. | 
| ColumnVector | An interface representing in-memory columnar data in Spark. |