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

接口 HsFileDataIndexSpilledRegionManager

所有超级接口:

AutoCloseable

所有已知实现类:

HsFileDataIndexSpilledRegionManagerImpl

public interface HsFileDataIndexSpilledRegionManager
extends AutoCloseable

This class is responsible for spilling region to disk and managing these spilled regions.

嵌套类概要

嵌套类

限定符和类型	接口和说明
static interface	HsFileDataIndexSpilledRegionManager.Factory Factory of HsFileDataIndexSpilledRegionManager.

方法概要

限定符和类型	方法和说明
void	appendOrOverwriteRegion(int subpartition, org.apache.flink.runtime.io.network.partition.hybrid.HsFileDataIndexImpl.InternalRegion region) Write this region to index file.
void	close() Close this spilled region manager.
long	findRegion(int subpartition, int bufferIndex, boolean loadToCache) Find the region contains target bufferIndex and belong to target subpartition.

方法详细资料

appendOrOverwriteRegion

void appendOrOverwriteRegion(int subpartition,
                             org.apache.flink.runtime.io.network.partition.hybrid.HsFileDataIndexImpl.InternalRegion region)
                      throws IOException

Write this region to index file. If target region already spilled, overwrite it.

参数:

subpartition - the subpartition id of this region.

region - the region to be spilled to index file.

抛出:

IOException

findRegion

long findRegion(int subpartition,
                int bufferIndex,
                boolean loadToCache)

Find the region contains target bufferIndex and belong to target subpartition.

参数:

subpartition - the subpartition id that target region belong to.

bufferIndex - the buffer index that target region contains.

loadToCache - whether to load the found region into the cache.

返回:

if target region can be founded, return it's offset in index file. Otherwise, return -1.

close

void close()
    throws IOException

Close this spilled region manager.

指定者:

close 在接口中 AutoCloseable

抛出:

IOException