| Package | Description | 
|---|---|
| org.apache.hadoop.fs | Implementations of  AbstractFileSystemfor hdfs
    over rpc and hdfs over web. | 
| org.apache.hadoop.io | Generic i/o code for use when reading and writing data to the network,
to databases, and to files. | 
| Modifier and Type | Method and Description | 
|---|---|
| ByteBuffer | FSDataInputStream. read(ByteBufferPool bufferPool,
    int maxLength) | 
| ByteBuffer | FSDataInputStream. read(ByteBufferPool bufferPool,
    int maxLength,
    EnumSet<ReadOption> opts) | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ElasticByteBufferPoolThis is a simple ByteBufferPool which just creates ByteBuffers as needed. | 
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