| 程序包 | 说明 |
|---|---|
| org.apache.hadoop.fs |
An abstract file system API.
|
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.kfs |
A client for the Kosmos filesystem (KFS)
Introduction
This pages describes how to use Kosmos Filesystem
( KFS ) as a backing
store with Hadoop.
|
| org.apache.hadoop.fs.s3 |
A distributed, block-based implementation of
FileSystem that uses Amazon S3
as a backing store. |
| org.apache.hadoop.fs.s3native |
A distributed implementation of
FileSystem for reading and writing files on
Amazon S3. |
| org.apache.hadoop.hdfs |
A distributed implementation of
FileSystem. |
| org.apache.hadoop.hdfs.web | |
| org.apache.hadoop.io |
Generic i/o code for use when reading and writing data to the network,
to databases, and to files.
|
| org.apache.hadoop.io.file.tfile |
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
FileSystem.append(Path f)
Append to an existing file (optional operation).
|
FSDataOutputStream |
FileSystem.append(Path f,
int bufferSize)
Append to an existing file (optional operation).
|
FSDataOutputStream |
RawLocalFileSystem.append(Path f,
int bufferSize,
Progressable progress)
Append to an existing file (optional operation).
|
FSDataOutputStream |
FilterFileSystem.append(Path f,
int bufferSize,
Progressable progress)
Append to an existing file (optional operation).
|
abstract FSDataOutputStream |
FileSystem.append(Path f,
int bufferSize,
Progressable progress)
Append to an existing file (optional operation).
|
FSDataOutputStream |
ChecksumFileSystem.append(Path f,
int bufferSize,
Progressable progress)
Append to an existing file (optional operation).
|
static FSDataOutputStream |
FileSystem.create(FileSystem fs,
Path file,
FsPermission permission)
create a file with the provided permission
The permission of the file is set to be the provided permission as in
setPermission, not permission&~umask
It is implemented using two RPCs.
|
FSDataOutputStream |
FileSystem.create(Path f)
Opens an FSDataOutputStream at the indicated Path.
|
FSDataOutputStream |
FileSystem.create(Path f,
boolean overwrite)
Opens an FSDataOutputStream at the indicated Path.
|
FSDataOutputStream |
FileSystem.create(Path f,
boolean overwrite,
int bufferSize)
Opens an FSDataOutputStream at the indicated Path.
|
FSDataOutputStream |
FileSystem.create(Path f,
boolean overwrite,
int bufferSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
FileSystem.create(Path f,
boolean overwrite,
int bufferSize,
short replication,
long blockSize)
Opens an FSDataOutputStream at the indicated Path.
|
FSDataOutputStream |
RawLocalFileSystem.create(Path f,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
FileSystem.create(Path f,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
RawLocalFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
HarFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
FSDataOutputStream |
FilterFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
abstract FSDataOutputStream |
FileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
ChecksumFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
HarFileSystem.create(Path f,
int bufferSize) |
FSDataOutputStream |
FileSystem.create(Path f,
Progressable progress)
Create an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
FileSystem.create(Path f,
short replication)
Opens an FSDataOutputStream at the indicated Path.
|
FSDataOutputStream |
FileSystem.create(Path f,
short replication,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
FileSystem.createNonRecursive(Path f,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
已过时。
API only for 0.20-append
|
FSDataOutputStream |
RawLocalFileSystem.createNonRecursive(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
FSDataOutputStream |
FileSystem.createNonRecursive(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
已过时。
API only for 0.20-append
|
FSDataOutputStream |
ChecksumFileSystem.createNonRecursive(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Opens an FSDataOutputStream at the indicated Path with write-progress
reporting.
|
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
FTPFileSystem.append(Path f,
int bufferSize,
Progressable progress)
This optional operation is not yet supported.
|
FSDataOutputStream |
FTPFileSystem.create(Path file,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
A stream obtained via this call must be closed before using other APIs of
this class or else the invocation will block.
|
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
KosmosFileSystem.append(Path f,
int bufferSize,
Progressable progress)
This optional operation is not yet supported.
|
FSDataOutputStream |
KosmosFileSystem.create(Path file,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
S3FileSystem.append(Path f,
int bufferSize,
Progressable progress)
This optional operation is not yet supported.
|
FSDataOutputStream |
S3FileSystem.create(Path file,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
NativeS3FileSystem.append(Path f,
int bufferSize,
Progressable progress)
This optional operation is not yet supported.
|
FSDataOutputStream |
NativeS3FileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
HftpFileSystem.append(Path f,
int bufferSize,
Progressable progress)
This optional operation is not yet supported.
|
FSDataOutputStream |
DistributedFileSystem.append(Path f,
int bufferSize,
Progressable progress)
This optional operation is not yet supported.
|
FSDataOutputStream |
DFSClient.append(String src,
int buffersize,
Progressable progress,
FileSystem.Statistics statistics)
Append to an existing HDFS file.
|
FSDataOutputStream |
HftpFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
FSDataOutputStream |
DistributedFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
FSDataOutputStream |
DistributedFileSystem.createNonRecursive(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress)
Same as create(), except fails if parent directory doesn't already exist.
|
| 限定符和类型 | 方法和说明 |
|---|---|
FSDataOutputStream |
WebHdfsFileSystem.append(Path f,
int bufferSize,
Progressable progress) |
FSDataOutputStream |
WebHdfsFileSystem.create(Path f,
FsPermission permission,
boolean overwrite,
int bufferSize,
short replication,
long blockSize,
Progressable progress) |
| 限定符和类型 | 方法和说明 |
|---|---|
static SequenceFile.Writer |
SequenceFile.createWriter(Configuration conf,
FSDataOutputStream out,
Class keyClass,
Class valClass,
SequenceFile.CompressionType compressionType,
CompressionCodec codec)
Construct the preferred type of 'raw' SequenceFile Writer.
|
static SequenceFile.Writer |
SequenceFile.createWriter(Configuration conf,
FSDataOutputStream out,
Class keyClass,
Class valClass,
SequenceFile.CompressionType compressionType,
CompressionCodec codec,
SequenceFile.Metadata metadata)
Construct the preferred type of 'raw' SequenceFile Writer.
|
| 构造器和说明 |
|---|
TFile.Writer(FSDataOutputStream fsdos,
int minBlockSize,
String compressName,
String comparator,
Configuration conf)
Constructor
|
Copyright © 2009 The Apache Software Foundation