Package io.trino.tempto.hadoop.hdfs

Interface HdfsClient

All Known Implementing Classes:

WebHdfsClient

public interface HdfsClient

HDFS client.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	HdfsClient.RepeatableContentProducer	Interface of an object that can open same input stream multiple times.

Method Summary

Modifier and Type	Method	Description
void	createDirectory(String path)
void	delete(String path)
boolean	exist(String path)
String	getGroup(String path)
long	getLength(String path)
String	getOwner(String path)
String	getPermission(String path)
Optional<String>	getXAttr(String path, String key)
List<String>	listDirectory(String path)
void	loadFile(String path, OutputStream outputStream)
default String	loadFile(String path, Charset charset)
void	removeXAttr(String path, String key)
void	saveFile(String path, HdfsClient.RepeatableContentProducer repeatableContentProducer)
void	saveFile(String path, InputStream input)
default void	saveFile(String path, String content)
void	setGroup(String path, String group)
void	setOwner(String path, String owner)
void	setPermission(String path, String octalPermissions)
void	setXAttr(String path, String key, String value)

Method Details

createDirectory

void createDirectory(String path)

delete

void delete(String path)

saveFile

void saveFile(String path,
 InputStream input)

saveFile

void saveFile(String path,
 HdfsClient.RepeatableContentProducer repeatableContentProducer)

saveFile

default void saveFile(String path,
 String content)

loadFile

void loadFile(String path,
 OutputStream outputStream)

listDirectory

List<String> listDirectory(String path)

loadFile

default String loadFile(String path,
 Charset charset)

setXAttr

void setXAttr(String path,
 String key,
 String value)

removeXAttr

void removeXAttr(String path,
 String key)

getXAttr

Optional<String> getXAttr(String path,
 String key)

getLength

long getLength(String path)

Parameters:

path - File to be examined

Returns:

length of a file stored in HDFS, -1 if file not exists

exist

boolean exist(String path)

getOwner

String getOwner(String path)

setOwner

void setOwner(String path,
 String owner)

getGroup

String getGroup(String path)

setGroup

void setGroup(String path,
 String group)

getPermission

String getPermission(String path)

setPermission

void setPermission(String path,
 String octalPermissions)