See: Description
| Interface | Description | 
|---|---|
| FixedSizeWriteableFactory<T extends org.apache.hadoop.io.Writable> | Sub-interface for WritableFactory, where the Writable objects have a fixed size on 
 disk. | 
| WriteableFactory<T> | General interface for factories of Writable objects. | 
| Class | Description | 
|---|---|
| FixedSizeIntWritableFactory | Makes an IntWritable, which has a fixed Writable size of 4 bytes. | 
| FixedSizeTextFactory | Makes a  Textobject that has a fixed size when written usingWritablemethods. | 
Provides classes for things that can be serializaed to disk. Invariably, these have a fixed-size, so that random-seeks etc can be utilised on persistent data structures.
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