public class HdfsDirectoryFactory extends CachingDirectoryFactory
CachingDirectoryFactory.CacheValue, CachingDirectoryFactory.CloseListenerDirectoryFactory.DirContext| Modifier and Type | Field and Description |
|---|---|
static String |
BLOCKCACHE_DIRECT_MEMORY_ALLOCATION |
static String |
BLOCKCACHE_ENABLED |
static String |
BLOCKCACHE_GLOBAL |
static String |
BLOCKCACHE_READ_ENABLED |
static String |
BLOCKCACHE_SLAB_COUNT |
static String |
BLOCKCACHE_WRITE_ENABLED |
static String |
CONFIG_DIRECTORY |
static String |
HDFS_HOME |
static String |
KERBEROS_ENABLED |
static String |
KERBEROS_KEYTAB |
static String |
KERBEROS_PRINCIPAL |
static org.slf4j.Logger |
LOG |
static Metrics |
metrics |
static String |
NRTCACHINGDIRECTORY_ENABLE |
static String |
NRTCACHINGDIRECTORY_MAXCACHEMB |
static String |
NRTCACHINGDIRECTORY_MAXMERGESIZEMB |
static String |
NUMBEROFBLOCKSPERBANK |
byDirectoryCache, byPathCache, closeListeners, removeEntriesIOCONTEXT_NO_CACHE| Constructor and Description |
|---|
HdfsDirectoryFactory() |
| Modifier and Type | Method and Description |
|---|---|
protected Directory |
create(String path,
DirectoryFactory.DirContext dirContext)
Creates a new Directory for a given path.
|
boolean |
exists(String path)
Returns true if a Directory exists for a given path.
|
String |
getConfDir() |
String |
getDataHome(CoreDescriptor cd) |
void |
init(NamedList args) |
boolean |
isAbsolute(String path) |
boolean |
isPersistent() |
boolean |
isSharedStorage() |
protected void |
removeDirectory(CachingDirectoryFactory.CacheValue cacheValue) |
boolean |
searchersReserveCommitPoints()
If your implementation can count on delete-on-last-close semantics
or throws an exception when trying to remove a file in use, return
false (eg NFS).
|
addCloseListener, close, doneWithDirectory, get, getLivePaths, incRef, normalize, release, remove, remove, remove, remove, stripTrailingSlashempty, move, sizeOf, sizeOfDirectorypublic static org.slf4j.Logger LOG
public static final String BLOCKCACHE_SLAB_COUNT
public static final String BLOCKCACHE_DIRECT_MEMORY_ALLOCATION
public static final String BLOCKCACHE_ENABLED
public static final String BLOCKCACHE_GLOBAL
public static final String BLOCKCACHE_READ_ENABLED
public static final String BLOCKCACHE_WRITE_ENABLED
public static final String NRTCACHINGDIRECTORY_ENABLE
public static final String NRTCACHINGDIRECTORY_MAXMERGESIZEMB
public static final String NRTCACHINGDIRECTORY_MAXCACHEMB
public static final String NUMBEROFBLOCKSPERBANK
public static final String KERBEROS_ENABLED
public static final String KERBEROS_KEYTAB
public static final String KERBEROS_PRINCIPAL
public static final String HDFS_HOME
public static final String CONFIG_DIRECTORY
public static Metrics metrics
public void init(NamedList args)
init in interface NamedListInitializedPlugininit in class CachingDirectoryFactoryprotected Directory create(String path, DirectoryFactory.DirContext dirContext) throws IOException
DirectoryFactorycreate in class CachingDirectoryFactoryIOException - If there is a low-level I/O error.public boolean exists(String path)
DirectoryFactoryexists in class CachingDirectoryFactoryprotected void removeDirectory(CachingDirectoryFactory.CacheValue cacheValue) throws IOException
removeDirectory in class CachingDirectoryFactoryIOExceptionpublic boolean isAbsolute(String path)
isAbsolute in class DirectoryFactorypath - the path to checkpublic boolean isPersistent()
isPersistent in class DirectoryFactorypublic boolean isSharedStorage()
isSharedStorage in class DirectoryFactorypublic boolean searchersReserveCommitPoints()
DirectoryFactorysearchersReserveCommitPoints in class DirectoryFactorypublic String getDataHome(CoreDescriptor cd) throws IOException
getDataHome in class DirectoryFactoryIOExceptionpublic String getConfDir()
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