org.apache.flink.runtime.io.network.partition

类 PartitionedFile

java.lang.Object

org.apache.flink.runtime.io.network.partition.PartitionedFile

public class PartitionedFile
extends Object

PartitionedFile is the persistent file type of sort-merge based blocking shuffle. Each PartitionedFile contains two physical files: one is the data file and the other is the index file. Both the data file and the index file have multiple regions. Data belonging to the same subpartition are stored together in each data region and the corresponding index region contains index entries of all subpartitions. Each index entry is a (long, integer) value tuple of which the long value represents the file offset of the target subpartition and the integer value is the number of buffers.

字段概要

字段

限定符和类型	字段和说明
static String	DATA_FILE_SUFFIX
static int	INDEX_ENTRY_SIZE Size of each index entry in the index file: 8 bytes for file offset and 8 bytes for data size in bytes.
static String	INDEX_FILE_SUFFIX

构造器概要

构造器

构造器和说明
PartitionedFile(int numRegions, int numSubpartitions, Path dataFilePath, Path indexFilePath, long dataFileSize, long indexFileSize, long numBuffers, ByteBuffer indexEntryCache)

方法概要

限定符和类型	方法和说明
void	deleteQuietly()
Path	getDataFilePath()
Path	getIndexFilePath()
int	getNumRegions()
boolean	isReadable()
String	toString()

从类继承的方法 java.lang.Object

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

字段详细资料

DATA_FILE_SUFFIX

public static final String DATA_FILE_SUFFIX

另请参阅:

常量字段值

INDEX_FILE_SUFFIX

public static final String INDEX_FILE_SUFFIX

另请参阅:

常量字段值

INDEX_ENTRY_SIZE

public static final int INDEX_ENTRY_SIZE

Size of each index entry in the index file: 8 bytes for file offset and 8 bytes for data size in bytes.

另请参阅:

常量字段值

构造器详细资料

PartitionedFile

public PartitionedFile(int numRegions,
                       int numSubpartitions,
                       Path dataFilePath,
                       Path indexFilePath,
                       long dataFileSize,
                       long indexFileSize,
                       long numBuffers,
                       @Nullable
                       ByteBuffer indexEntryCache)

方法详细资料

getDataFilePath

public Path getDataFilePath()

getIndexFilePath

public Path getIndexFilePath()

getNumRegions

public int getNumRegions()

isReadable

public boolean isReadable()

deleteQuietly

public void deleteQuietly()

toString

public String toString()

覆盖:

toString 在类中 Object