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

类 HsFileDataIndexImpl.HsFileDataIndexRegionHelper

java.lang.Object

org.apache.flink.runtime.io.network.partition.hybrid.HsFileDataIndexImpl.HsFileDataIndexRegionHelper

所有已实现的接口:

FileDataIndexRegionHelper<HsFileDataIndexImpl.InternalRegion>

封闭类:

HsFileDataIndexImpl

public static class HsFileDataIndexImpl.HsFileDataIndexRegionHelper
extends Object
implements FileDataIndexRegionHelper<HsFileDataIndexImpl.InternalRegion>

The implementation of FileDataIndexRegionHelper to writing a region to the file or reading a region from the file.

Note that this type of region's length may be variable because it contains an array to indicate each buffer's release state.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.runtime.io.network.partition.hybrid.index.FileDataIndexRegionHelper

FileDataIndexRegionHelper.Region

字段概要

字段

限定符和类型	字段和说明
static HsFileDataIndexImpl.HsFileDataIndexRegionHelper	INSTANCE

方法概要

限定符和类型	方法和说明
HsFileDataIndexImpl.InternalRegion	readRegionFromFile(FileChannel channel, long fileOffset) Read a region from the file.
void	writeRegionToFile(FileChannel channel, HsFileDataIndexImpl.InternalRegion region) Write the region to the file.

从类继承的方法 java.lang.Object

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

字段详细资料

INSTANCE

public static final HsFileDataIndexImpl.HsFileDataIndexRegionHelper INSTANCE

方法详细资料

writeRegionToFile

public void writeRegionToFile(FileChannel channel,
                              HsFileDataIndexImpl.InternalRegion region)
                       throws IOException

从接口复制的说明: FileDataIndexRegionHelper

Write the region to the file.

指定者:

writeRegionToFile 在接口中 FileDataIndexRegionHelper<HsFileDataIndexImpl.InternalRegion>

参数:

channel - the file channel to write the region

region - the region to be written to the file

抛出:

IOException

readRegionFromFile

public HsFileDataIndexImpl.InternalRegion readRegionFromFile(FileChannel channel,
                                                             long fileOffset)
                                                      throws IOException

从接口复制的说明: FileDataIndexRegionHelper

Read a region from the file.

指定者:

readRegionFromFile 在接口中 FileDataIndexRegionHelper<HsFileDataIndexImpl.InternalRegion>

参数:

channel - the file channel to read the region

fileOffset - the current region data is from this file offset, so start reading the file from the offset when reading the region

返回:

the region read from the file

抛出:

IOException