org.apache.hudi.hadoop.fs.inline

Class InMemoryFileSystem

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.fs.FileSystem

org.apache.hudi.hadoop.fs.inline.InMemoryFileSystem

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.conf.Configurable

public class InMemoryFileSystem
extends org.apache.hadoop.fs.FileSystem

A FileSystem which stores all content in memory and returns a byte[] when getFileAsBytes() is called This FileSystem is used only in write path. Does not support any read apis except getFileAsBytes().

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.fs.FileSystem

org.apache.hadoop.fs.FileSystem.DirectoryEntries, org.apache.hadoop.fs.FileSystem.Statistics

Field Summary

Fields

Modifier and Type	Field and Description
static String	SCHEME

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

DEFAULT_FS, FS_DEFAULT_NAME_KEY, LOG, SHUTDOWN_HOOK_PRIORITY, statistics, TRASH_PREFIX, USER_HOME_PREFIX

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.fs.FSDataOutputStream	append(org.apache.hadoop.fs.Path path, int i, org.apache.hadoop.util.Progressable progressable)
void	close()
org.apache.hadoop.fs.FSDataOutputStream	create(org.apache.hadoop.fs.Path path, org.apache.hadoop.fs.permission.FsPermission fsPermission, boolean b, int i, short i1, long l, org.apache.hadoop.util.Progressable progressable)
boolean	delete(org.apache.hadoop.fs.Path path, boolean b)
boolean	exists(org.apache.hadoop.fs.Path f)
byte[]	getFileAsBytes()
org.apache.hadoop.fs.FileStatus	getFileStatus(org.apache.hadoop.fs.Path inlinePath)
String	getScheme()
URI	getUri()
org.apache.hadoop.fs.Path	getWorkingDirectory()
void	initialize(URI name, org.apache.hadoop.conf.Configuration conf)
org.apache.hadoop.fs.FileStatus[]	listStatus(org.apache.hadoop.fs.Path inlinePath)
boolean	mkdirs(org.apache.hadoop.fs.Path path, org.apache.hadoop.fs.permission.FsPermission fsPermission)
org.apache.hadoop.fs.FSDataInputStream	open(org.apache.hadoop.fs.Path inlinePath, int bufferSize)
boolean	rename(org.apache.hadoop.fs.Path path, org.apache.hadoop.fs.Path path1)
void	setWorkingDirectory(org.apache.hadoop.fs.Path path)

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

access, addDelegationTokens, append, append, appendFile, areSymlinksEnabled, cancelDeleteOnExit, canonicalizeUri, checkPath, clearStatistics, closeAll, closeAllForUGI, completeLocalOutput, concat, copyFromLocalFile, copyFromLocalFile, copyFromLocalFile, copyFromLocalFile, copyToLocalFile, copyToLocalFile, copyToLocalFile, create, create, create, create, create, create, create, create, create, create, create, create, createFile, createNewFile, createNonRecursive, createNonRecursive, createNonRecursive, createSnapshot, createSnapshot, createSymlink, delete, deleteOnExit, deleteSnapshot, enableSymlinks, fixRelativePart, get, get, get, getAclStatus, getAllStatistics, getAllStoragePolicies, getBlockSize, getCanonicalServiceName, getCanonicalUri, getChildFileSystems, getContentSummary, getDefaultBlockSize, getDefaultBlockSize, getDefaultPort, getDefaultReplication, getDefaultReplication, getDefaultUri, getDelegationToken, getFileBlockLocations, getFileBlockLocations, getFileChecksum, getFileChecksum, getFileLinkStatus, getFileSystemClass, getFSofPath, getGlobalStorageStatistics, getHomeDirectory, getInitialWorkingDirectory, getLength, getLinkTarget, getLocal, getName, getNamed, getQuotaUsage, getReplication, getServerDefaults, getServerDefaults, getStatistics, getStatistics, getStatus, getStatus, getStoragePolicy, getStorageStatistics, getTrashRoot, getTrashRoots, getUsed, getUsed, getXAttr, getXAttrs, getXAttrs, globStatus, globStatus, isDirectory, isFile, listCorruptFileBlocks, listFiles, listLocatedStatus, listLocatedStatus, listStatus, listStatus, listStatus, listStatusBatch, listStatusIterator, listXAttrs, makeQualified, mkdirs, mkdirs, modifyAclEntries, moveFromLocalFile, moveFromLocalFile, moveToLocalFile, msync, newInstance, newInstance, newInstance, newInstanceLocal, open, primitiveCreate, primitiveMkdir, primitiveMkdir, printStatistics, processDeleteOnExit, removeAcl, removeAclEntries, removeDefaultAcl, removeXAttr, rename, renameSnapshot, resolveLink, resolvePath, setAcl, setDefaultUri, setDefaultUri, setOwner, setPermission, setReplication, setStoragePolicy, setTimes, setVerifyChecksum, setWriteChecksum, setXAttr, setXAttr, startLocalOutput, supportsSymlinks, truncate, unsetStoragePolicy

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Field Detail

SCHEME

public static final String SCHEME

See Also:

Constant Field Values

Method Detail

initialize

public void initialize(URI name,
                       org.apache.hadoop.conf.Configuration conf)
                throws IOException

Overrides:

initialize in class org.apache.hadoop.fs.FileSystem

Throws:

IOException

getUri

public URI getUri()

Specified by:

getUri in class org.apache.hadoop.fs.FileSystem

getScheme

public String getScheme()

Overrides:

getScheme in class org.apache.hadoop.fs.FileSystem

open

public org.apache.hadoop.fs.FSDataInputStream open(org.apache.hadoop.fs.Path inlinePath,
                                                   int bufferSize)

Specified by:

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

create

public org.apache.hadoop.fs.FSDataOutputStream create(org.apache.hadoop.fs.Path path,
                                                      org.apache.hadoop.fs.permission.FsPermission fsPermission,
                                                      boolean b,
                                                      int i,
                                                      short i1,
                                                      long l,
                                                      org.apache.hadoop.util.Progressable progressable)
                                               throws IOException

Specified by:

create in class org.apache.hadoop.fs.FileSystem

Throws:

IOException

getFileAsBytes

public byte[] getFileAsBytes()

append

public org.apache.hadoop.fs.FSDataOutputStream append(org.apache.hadoop.fs.Path path,
                                                      int i,
                                                      org.apache.hadoop.util.Progressable progressable)
                                               throws IOException

Specified by:

append in class org.apache.hadoop.fs.FileSystem

Throws:

IOException

rename

public boolean rename(org.apache.hadoop.fs.Path path,
                      org.apache.hadoop.fs.Path path1)
               throws IOException

Specified by:

rename in class org.apache.hadoop.fs.FileSystem

Throws:

IOException

delete

public boolean delete(org.apache.hadoop.fs.Path path,
                      boolean b)
               throws IOException

Specified by:

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

Throws:

IOException

listStatus

public org.apache.hadoop.fs.FileStatus[] listStatus(org.apache.hadoop.fs.Path inlinePath)
                                             throws FileNotFoundException,
                                                    IOException

Specified by:

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

Throws:

FileNotFoundException

IOException

setWorkingDirectory

public void setWorkingDirectory(org.apache.hadoop.fs.Path path)

Specified by:

setWorkingDirectory in class org.apache.hadoop.fs.FileSystem

getWorkingDirectory

public org.apache.hadoop.fs.Path getWorkingDirectory()

Specified by:

getWorkingDirectory in class org.apache.hadoop.fs.FileSystem

mkdirs

public boolean mkdirs(org.apache.hadoop.fs.Path path,
                      org.apache.hadoop.fs.permission.FsPermission fsPermission)
               throws IOException

Specified by:

mkdirs in class org.apache.hadoop.fs.FileSystem

Throws:

IOException

exists

public boolean exists(org.apache.hadoop.fs.Path f)
               throws IOException

Overrides:

exists in class org.apache.hadoop.fs.FileSystem

Throws:

IOException

getFileStatus

public org.apache.hadoop.fs.FileStatus getFileStatus(org.apache.hadoop.fs.Path inlinePath)
                                              throws IOException

Specified by:

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

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class org.apache.hadoop.fs.FileSystem

Throws:

IOException