Package org.apache.hadoop.fs

Class Hdfs

java.lang.Object

org.apache.hadoop.fs.AbstractFileSystem

org.apache.hadoop.fs.Hdfs

All Implemented Interfaces:

org.apache.hadoop.fs.PathCapabilities

@Private
@Evolving
public class Hdfs
extends org.apache.hadoop.fs.AbstractFileSystem

Field Summary

Fields inherited from class org.apache.hadoop.fs.AbstractFileSystem

statistics

Method Summary

Modifier and Type	Method	Description
void	access(org.apache.hadoop.fs.Path path, org.apache.hadoop.fs.permission.FsAction mode)
void	cancelDelegationToken(org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier> token)	Deprecated. Use Token.cancel instead.
HdfsDataOutputStream	createInternal(org.apache.hadoop.fs.Path f, java.util.EnumSet<org.apache.hadoop.fs.CreateFlag> createFlag, org.apache.hadoop.fs.permission.FsPermission absolutePermission, int bufferSize, short replication, long blockSize, org.apache.hadoop.util.Progressable progress, org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt, boolean createParent)
org.apache.hadoop.fs.Path	createSnapshot(org.apache.hadoop.fs.Path path, java.lang.String snapshotName)
void	createSymlink(org.apache.hadoop.fs.Path target, org.apache.hadoop.fs.Path link, boolean createParent)
boolean	delete(org.apache.hadoop.fs.Path f, boolean recursive)
void	deleteSnapshot(org.apache.hadoop.fs.Path snapshotDir, java.lang.String snapshotName)
org.apache.hadoop.fs.permission.AclStatus	getAclStatus(org.apache.hadoop.fs.Path path)
java.util.Collection<? extends org.apache.hadoop.fs.BlockStoragePolicySpi>	getAllStoragePolicies()
java.lang.String	getCanonicalServiceName()
java.util.List<org.apache.hadoop.security.token.Token<?>>	getDelegationTokens(java.lang.String renewer)
org.apache.hadoop.fs.BlockLocation[]	getFileBlockLocations(org.apache.hadoop.fs.Path p, long start, long len)	The returned BlockLocation will have different formats for replicated and erasure coded file.
org.apache.hadoop.fs.FileChecksum	getFileChecksum(org.apache.hadoop.fs.Path f)
org.apache.hadoop.fs.FileStatus	getFileLinkStatus(org.apache.hadoop.fs.Path f)
org.apache.hadoop.fs.FileStatus	getFileStatus(org.apache.hadoop.fs.Path f)	If the given path is a symlink, the path will be resolved to a target path and it will get the resolved path's FileStatus object.
org.apache.hadoop.fs.FsStatus	getFsStatus()
org.apache.hadoop.fs.Path	getLinkTarget(org.apache.hadoop.fs.Path p)
org.apache.hadoop.fs.FsServerDefaults	getServerDefaults()	Deprecated.
org.apache.hadoop.fs.FsServerDefaults	getServerDefaults(org.apache.hadoop.fs.Path f)
org.apache.hadoop.fs.BlockStoragePolicySpi	getStoragePolicy(org.apache.hadoop.fs.Path src)
int	getUriDefaultPort()
byte[]	getXAttr(org.apache.hadoop.fs.Path path, java.lang.String name)
java.util.Map<java.lang.String,byte[]>	getXAttrs(org.apache.hadoop.fs.Path path)
java.util.Map<java.lang.String,byte[]>	getXAttrs(org.apache.hadoop.fs.Path path, java.util.List<java.lang.String> names)
org.apache.hadoop.fs.RemoteIterator<org.apache.hadoop.fs.Path>	listCorruptFileBlocks(org.apache.hadoop.fs.Path path)
org.apache.hadoop.fs.RemoteIterator<org.apache.hadoop.fs.LocatedFileStatus>	listLocatedStatus(org.apache.hadoop.fs.Path p)	The BlockLocation of returned LocatedFileStatus will have different formats for replicated and erasure coded file.
org.apache.hadoop.fs.FileStatus[]	listStatus(org.apache.hadoop.fs.Path f)	If any of the the immediate children of the given path f is a symlink, the returned FileStatus object of that children would be represented as a symlink.
org.apache.hadoop.fs.RemoteIterator<org.apache.hadoop.fs.FileStatus>	listStatusIterator(org.apache.hadoop.fs.Path f)
java.util.List<java.lang.String>	listXAttrs(org.apache.hadoop.fs.Path path)
void	mkdir(org.apache.hadoop.fs.Path dir, org.apache.hadoop.fs.permission.FsPermission permission, boolean createParent)
void	modifyAclEntries(org.apache.hadoop.fs.Path path, java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
void	msync()	Synchronize client metadata state with Active NameNode.
HdfsDataInputStream	open(org.apache.hadoop.fs.Path f, int bufferSize)
void	removeAcl(org.apache.hadoop.fs.Path path)
void	removeAclEntries(org.apache.hadoop.fs.Path path, java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
void	removeDefaultAcl(org.apache.hadoop.fs.Path path)
void	removeXAttr(org.apache.hadoop.fs.Path path, java.lang.String name)
void	renameInternal(org.apache.hadoop.fs.Path src, org.apache.hadoop.fs.Path dst)
void	renameInternal(org.apache.hadoop.fs.Path src, org.apache.hadoop.fs.Path dst, boolean overwrite)
void	renameSnapshot(org.apache.hadoop.fs.Path path, java.lang.String snapshotOldName, java.lang.String snapshotNewName)
long	renewDelegationToken(org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier> token)	Deprecated. Use Token.renew instead.
void	satisfyStoragePolicy(org.apache.hadoop.fs.Path path)
void	setAcl(org.apache.hadoop.fs.Path path, java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
void	setOwner(org.apache.hadoop.fs.Path f, java.lang.String username, java.lang.String groupname)
void	setPermission(org.apache.hadoop.fs.Path f, org.apache.hadoop.fs.permission.FsPermission permission)
boolean	setReplication(org.apache.hadoop.fs.Path f, short replication)
void	setStoragePolicy(org.apache.hadoop.fs.Path path, java.lang.String policyName)
void	setTimes(org.apache.hadoop.fs.Path f, long mtime, long atime)
void	setVerifyChecksum(boolean verifyChecksum)
void	setXAttr(org.apache.hadoop.fs.Path path, java.lang.String name, byte[] value, java.util.EnumSet<org.apache.hadoop.fs.XAttrSetFlag> flag)
boolean	supportsSymlinks()
boolean	truncate(org.apache.hadoop.fs.Path f, long newLength)
void	unsetStoragePolicy(org.apache.hadoop.fs.Path src)

Methods inherited from class org.apache.hadoop.fs.AbstractFileSystem

checkPath, checkScheme, clearStatistics, create, createFileSystem, createMultipartUploader, equals, get, getAllStatistics, getEnclosingRoot, getFsStatus, getHomeDirectory, getInitialWorkingDirectory, getStatistics, getStatistics, getUri, getUriPath, hashCode, hasPathCapability, isValidName, makeQualified, methodNotSupported, open, openFileWithOptions, printStatistics, rename, resolvePath, setXAttr

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

getUriDefaultPort

public int getUriDefaultPort()

Specified by:

getUriDefaultPort in class org.apache.hadoop.fs.AbstractFileSystem

createInternal

public HdfsDataOutputStream createInternal(org.apache.hadoop.fs.Path f,
                                           java.util.EnumSet<org.apache.hadoop.fs.CreateFlag> createFlag,
                                           org.apache.hadoop.fs.permission.FsPermission absolutePermission,
                                           int bufferSize,
                                           short replication,
                                           long blockSize,
                                           org.apache.hadoop.util.Progressable progress,
                                           org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt,
                                           boolean createParent)
                                    throws java.io.IOException

Specified by:

createInternal in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

delete

public boolean delete(org.apache.hadoop.fs.Path f,
                      boolean recursive)
               throws java.io.IOException,
                      org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

delete in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

getFileBlockLocations

public org.apache.hadoop.fs.BlockLocation[] getFileBlockLocations(org.apache.hadoop.fs.Path p,
                                                                  long start,
                                                                  long len)
                                                           throws java.io.IOException,
                                                                  org.apache.hadoop.fs.UnresolvedLinkException

The returned BlockLocation will have different formats for replicated and erasure coded file. Please refer to FileContext.getFileBlockLocations(Path, long, long) for more details.

Specified by:

getFileBlockLocations in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

getFileChecksum

public org.apache.hadoop.fs.FileChecksum getFileChecksum(org.apache.hadoop.fs.Path f)
                                                  throws java.io.IOException,
                                                         org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

getFileChecksum in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

getFileStatus

public org.apache.hadoop.fs.FileStatus getFileStatus(org.apache.hadoop.fs.Path f)
                                              throws java.io.IOException,
                                                     org.apache.hadoop.fs.UnresolvedLinkException

If the given path is a symlink, the path will be resolved to a target path and it will get the resolved path's FileStatus object. It will not be represented as a symlink and isDirectory API returns true if the resolved path is a directory, false otherwise.

Specified by:

getFileStatus in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

msync

public void msync()
           throws java.io.IOException

Synchronize client metadata state with Active NameNode.

In HA the client synchronizes its state with the Active NameNode in order to guarantee subsequent read consistency from Observer Nodes.

Overrides:

msync in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getFileLinkStatus

public org.apache.hadoop.fs.FileStatus getFileLinkStatus(org.apache.hadoop.fs.Path f)
                                                  throws java.io.IOException,
                                                         org.apache.hadoop.fs.UnresolvedLinkException

Overrides:

getFileLinkStatus in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

getFsStatus

public org.apache.hadoop.fs.FsStatus getFsStatus()
                                          throws java.io.IOException

Specified by:

getFsStatus in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getServerDefaults

@Deprecated
public org.apache.hadoop.fs.FsServerDefaults getServerDefaults()
                                                        throws java.io.IOException

Deprecated.

Specified by:

getServerDefaults in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getServerDefaults

public org.apache.hadoop.fs.FsServerDefaults getServerDefaults(org.apache.hadoop.fs.Path f)
                                                        throws java.io.IOException

Overrides:

getServerDefaults in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

listLocatedStatus

public org.apache.hadoop.fs.RemoteIterator<org.apache.hadoop.fs.LocatedFileStatus> listLocatedStatus(org.apache.hadoop.fs.Path p)
                                                                                              throws java.io.FileNotFoundException,
                                                                                                     java.io.IOException

The BlockLocation of returned LocatedFileStatus will have different formats for replicated and erasure coded file. Please refer to FileContext.getFileBlockLocations(Path, long, long) for more details.

Overrides:

listLocatedStatus in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.FileNotFoundException

java.io.IOException

listStatusIterator

public org.apache.hadoop.fs.RemoteIterator<org.apache.hadoop.fs.FileStatus> listStatusIterator(org.apache.hadoop.fs.Path f)
                                                                                        throws org.apache.hadoop.security.AccessControlException,
                                                                                               java.io.FileNotFoundException,
                                                                                               org.apache.hadoop.fs.UnresolvedLinkException,
                                                                                               java.io.IOException

Overrides:

listStatusIterator in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

org.apache.hadoop.security.AccessControlException

java.io.FileNotFoundException

org.apache.hadoop.fs.UnresolvedLinkException

java.io.IOException

listStatus

public org.apache.hadoop.fs.FileStatus[] listStatus(org.apache.hadoop.fs.Path f)
                                             throws java.io.IOException,
                                                    org.apache.hadoop.fs.UnresolvedLinkException

If any of the the immediate children of the given path f is a symlink, the returned FileStatus object of that children would be represented as a symlink. It will not be resolved to the target path and will not get the target path FileStatus object. The target path will be available via getSymlink on that children's FileStatus object. Since it represents as symlink, isDirectory on that children's FileStatus will return false. If you want to get the FileStatus of target path for that children, you may want to use GetFileStatus API with that children's symlink path. Please see getFileStatus(Path f)

Specified by:

listStatus in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

listCorruptFileBlocks

public org.apache.hadoop.fs.RemoteIterator<org.apache.hadoop.fs.Path> listCorruptFileBlocks(org.apache.hadoop.fs.Path path)
                                                                                     throws java.io.IOException

Overrides:

listCorruptFileBlocks in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

mkdir

public void mkdir(org.apache.hadoop.fs.Path dir,
                  org.apache.hadoop.fs.permission.FsPermission permission,
                  boolean createParent)
           throws java.io.IOException,
                  org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

mkdir in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

open

public HdfsDataInputStream open(org.apache.hadoop.fs.Path f,
                                int bufferSize)
                         throws java.io.IOException,
                                org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

open in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

truncate

public boolean truncate(org.apache.hadoop.fs.Path f,
                        long newLength)
                 throws java.io.IOException,
                        org.apache.hadoop.fs.UnresolvedLinkException

Overrides:

truncate in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

renameInternal

public void renameInternal(org.apache.hadoop.fs.Path src,
                           org.apache.hadoop.fs.Path dst)
                    throws java.io.IOException,
                           org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

renameInternal in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

renameInternal

public void renameInternal(org.apache.hadoop.fs.Path src,
                           org.apache.hadoop.fs.Path dst,
                           boolean overwrite)
                    throws java.io.IOException,
                           org.apache.hadoop.fs.UnresolvedLinkException

Overrides:

renameInternal in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

setOwner

public void setOwner(org.apache.hadoop.fs.Path f,
                     java.lang.String username,
                     java.lang.String groupname)
              throws java.io.IOException,
                     org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

setOwner in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

setPermission

public void setPermission(org.apache.hadoop.fs.Path f,
                          org.apache.hadoop.fs.permission.FsPermission permission)
                   throws java.io.IOException,
                          org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

setPermission in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

setReplication

public boolean setReplication(org.apache.hadoop.fs.Path f,
                              short replication)
                       throws java.io.IOException,
                              org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

setReplication in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

setTimes

public void setTimes(org.apache.hadoop.fs.Path f,
                     long mtime,
                     long atime)
              throws java.io.IOException,
                     org.apache.hadoop.fs.UnresolvedLinkException

Specified by:

setTimes in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

setVerifyChecksum

public void setVerifyChecksum(boolean verifyChecksum)
                       throws java.io.IOException

Specified by:

setVerifyChecksum in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

supportsSymlinks

public boolean supportsSymlinks()

Overrides:

supportsSymlinks in class org.apache.hadoop.fs.AbstractFileSystem

createSymlink

public void createSymlink(org.apache.hadoop.fs.Path target,
                          org.apache.hadoop.fs.Path link,
                          boolean createParent)
                   throws java.io.IOException,
                          org.apache.hadoop.fs.UnresolvedLinkException

Overrides:

createSymlink in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

org.apache.hadoop.fs.UnresolvedLinkException

getLinkTarget

public org.apache.hadoop.fs.Path getLinkTarget(org.apache.hadoop.fs.Path p)
                                        throws java.io.IOException

Overrides:

getLinkTarget in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getCanonicalServiceName

public java.lang.String getCanonicalServiceName()

Overrides:

getCanonicalServiceName in class org.apache.hadoop.fs.AbstractFileSystem

getDelegationTokens

public java.util.List<org.apache.hadoop.security.token.Token<?>> getDelegationTokens(java.lang.String renewer)
                                                                              throws java.io.IOException

Overrides:

getDelegationTokens in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

modifyAclEntries

public void modifyAclEntries(org.apache.hadoop.fs.Path path,
                             java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
                      throws java.io.IOException

Overrides:

modifyAclEntries in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

removeAclEntries

public void removeAclEntries(org.apache.hadoop.fs.Path path,
                             java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
                      throws java.io.IOException

Overrides:

removeAclEntries in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

removeDefaultAcl

public void removeDefaultAcl(org.apache.hadoop.fs.Path path)
                      throws java.io.IOException

Overrides:

removeDefaultAcl in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

removeAcl

public void removeAcl(org.apache.hadoop.fs.Path path)
               throws java.io.IOException

Overrides:

removeAcl in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

setAcl

public void setAcl(org.apache.hadoop.fs.Path path,
                   java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
            throws java.io.IOException

Overrides:

setAcl in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getAclStatus

public org.apache.hadoop.fs.permission.AclStatus getAclStatus(org.apache.hadoop.fs.Path path)
                                                       throws java.io.IOException

Overrides:

getAclStatus in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

setXAttr

public void setXAttr(org.apache.hadoop.fs.Path path,
                     java.lang.String name,
                     byte[] value,
                     java.util.EnumSet<org.apache.hadoop.fs.XAttrSetFlag> flag)
              throws java.io.IOException

Overrides:

setXAttr in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getXAttr

public byte[] getXAttr(org.apache.hadoop.fs.Path path,
                       java.lang.String name)
                throws java.io.IOException

Overrides:

getXAttr in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getXAttrs

public java.util.Map<java.lang.String,byte[]> getXAttrs(org.apache.hadoop.fs.Path path)
                                                       throws java.io.IOException

Overrides:

getXAttrs in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getXAttrs

public java.util.Map<java.lang.String,byte[]> getXAttrs(org.apache.hadoop.fs.Path path,
                                                              java.util.List<java.lang.String> names)
                                                       throws java.io.IOException

Overrides:

getXAttrs in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

listXAttrs

public java.util.List<java.lang.String> listXAttrs(org.apache.hadoop.fs.Path path)
                                            throws java.io.IOException

Overrides:

listXAttrs in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

removeXAttr

public void removeXAttr(org.apache.hadoop.fs.Path path,
                        java.lang.String name)
                 throws java.io.IOException

Overrides:

removeXAttr in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

access

public void access(org.apache.hadoop.fs.Path path,
                   org.apache.hadoop.fs.permission.FsAction mode)
            throws java.io.IOException

Overrides:

access in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

satisfyStoragePolicy

public void satisfyStoragePolicy(org.apache.hadoop.fs.Path path)
                          throws java.io.IOException

Overrides:

satisfyStoragePolicy in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

setStoragePolicy

public void setStoragePolicy(org.apache.hadoop.fs.Path path,
                             java.lang.String policyName)
                      throws java.io.IOException

Overrides:

setStoragePolicy in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

unsetStoragePolicy

public void unsetStoragePolicy(org.apache.hadoop.fs.Path src)
                        throws java.io.IOException

Overrides:

unsetStoragePolicy in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getStoragePolicy

public org.apache.hadoop.fs.BlockStoragePolicySpi getStoragePolicy(org.apache.hadoop.fs.Path src)
                                                            throws java.io.IOException

Overrides:

getStoragePolicy in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

getAllStoragePolicies

public java.util.Collection<? extends org.apache.hadoop.fs.BlockStoragePolicySpi> getAllStoragePolicies()
                                                                                                 throws java.io.IOException

Overrides:

getAllStoragePolicies in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

renewDelegationToken

public long renewDelegationToken(org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier> token)
                          throws org.apache.hadoop.security.token.SecretManager.InvalidToken,
                                 java.io.IOException

Deprecated.

Use Token.renew instead.

Renew an existing delegation token.

Parameters:

token - delegation token obtained earlier

Returns:

the new expiration time

Throws:

org.apache.hadoop.security.token.SecretManager.InvalidToken

java.io.IOException

cancelDelegationToken

public void cancelDelegationToken(org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier> token)
                           throws org.apache.hadoop.security.token.SecretManager.InvalidToken,
                                  java.io.IOException

Deprecated.

Use Token.cancel instead.

Cancel an existing delegation token.

Parameters:

token - delegation token

Throws:

org.apache.hadoop.security.token.SecretManager.InvalidToken

java.io.IOException

createSnapshot

public org.apache.hadoop.fs.Path createSnapshot(org.apache.hadoop.fs.Path path,
                                                java.lang.String snapshotName)
                                         throws java.io.IOException

Overrides:

createSnapshot in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

renameSnapshot

public void renameSnapshot(org.apache.hadoop.fs.Path path,
                           java.lang.String snapshotOldName,
                           java.lang.String snapshotNewName)
                    throws java.io.IOException

Overrides:

renameSnapshot in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException

deleteSnapshot

public void deleteSnapshot(org.apache.hadoop.fs.Path snapshotDir,
                           java.lang.String snapshotName)
                    throws java.io.IOException

Overrides:

deleteSnapshot in class org.apache.hadoop.fs.AbstractFileSystem

Throws:

java.io.IOException