| Package | Description | 
|---|---|
| org.apache.hadoop.fs | Implementations of  AbstractFileSystemfor hdfs
    over rpc and hdfs over web. | 
| org.apache.hadoop.fs.impl | This package contains implementation classes for use inside
 filesystems. | 
| Modifier and Type | Method and Description | 
|---|---|
| FutureDataInputStreamBuilder | ChecksumFileSystem. openFile(Path path)This is overridden to ensure that this class's
  ChecksumFileSystem.openFileWithOptions(org.apache.hadoop.fs.Path, org.apache.hadoop.fs.impl.OpenFileParameters)() method is called, and so ultimately
 itsChecksumFileSystem.open(Path, int). | 
| FutureDataInputStreamBuilder | FileSystem. openFile(Path path)Open a file for reading through a builder API. | 
| FutureDataInputStreamBuilder | FileContext. openFile(Path path)Open a file for reading through a builder API. | 
| FutureDataInputStreamBuilder | FilterFileSystem. openFile(Path path) | 
| FutureDataInputStreamBuilder | FileSystem. openFile(PathHandle pathHandle)Open a file for reading through a builder API. | 
| FutureDataInputStreamBuilder | FilterFileSystem. openFile(PathHandle pathHandle) | 
| default FutureDataInputStreamBuilder | FutureDataInputStreamBuilder. withFileStatus(FileStatus status)A FileStatus may be provided to the open request. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | FutureDataInputStreamBuilderImplBuilder for input streams and subclasses whose return value is
 actually a completable future: this allows for better asynchronous
 operation. | 
| Modifier and Type | Method and Description | 
|---|---|
| FutureDataInputStreamBuilder | FutureDataInputStreamBuilderImpl. bufferSize(int bufSize)Set the size of the buffer to be used. | 
| FutureDataInputStreamBuilder | FutureDataInputStreamBuilderImpl. builder()Get the builder. | 
| FutureDataInputStreamBuilder | FutureDataInputStreamBuilderImpl. getThisBuilder() | 
| FutureDataInputStreamBuilder | FutureDataInputStreamBuilderImpl. withFileStatus(FileStatus st) | 
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