| Java primitive | Writable implementation | Serialized size (bytes) |
|---|---|---|
| boolean | BooleanWritable | 1 |
| byte | ByteWritable | 1 |
| short | ShortWritable | 2 |
| int | IntWritable | 4 |
| VIntWritable | 1 - 5 | |
| float | FloatWritable | 4 |
| long | LongWritable | 8 |
| VLongWritable | 1 - 8 | |
| double | DoubleWritable | 8 |
