| Package | Description | 
|---|---|
| org.apache.hadoop.fs | Implementations of  AbstractFileSystemfor hdfs
    over rpc and hdfs over web. | 
| org.apache.hadoop.hdfs.client | This package provides the administrative APIs for HDFS. | 
| org.apache.hadoop.io.compress | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | FSDataInputStreamUtility that wraps a  FSInputStreamin aDataInputStreamand buffers input through aBufferedInputStream. | 
| class  | FSInputStreamFSInputStream is a generic old InputStream with a little bit
 of RAF-style seek ability. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | HdfsDataInputStreamThe Hdfs implementation of  FSDataInputStream. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BlockDecompressorStreamA  DecompressorStreamwhich works
 with 'block-based' based compression algorithms, as opposed to 
 'stream-based' compression algorithms. | 
| class  | CompressionInputStreamA compression input stream. | 
| class  | DecompressorStream | 
| class  | SplitCompressionInputStreamAn InputStream covering a range of compressed data. | 
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