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

Class HsFileDataIndex.ReadableRegion

java.lang.Object

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

Enclosing interface:

HsFileDataIndex

public static class HsFileDataIndex.ReadableRegion
extends Object

Represents a series of physically continuous buffers in the file, which are readable, from the same subpartition, and has sequential buffer index.

For efficiency, the index may not remember offsets of all buffers. Thus, a region is described as: starting from the offset, skip the first numSkip buffers and include the next numReadable buffers.

Field Summary

Fields

Modifier and Type	Field and Description
int	numReadable From the offset, number of buffers to include after skipping the first numSkip ones.
int	numSkip From the offset, number of buffers to skip.
long	offset The file offset to begin with.

Constructor Summary

Constructors

Constructor and Description
ReadableRegion(int numSkip, int numReadable, long offset)

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

numSkip

public final int numSkip

From the offset, number of buffers to skip.

numReadable

public final int numReadable

From the offset, number of buffers to include after skipping the first numSkip ones.

offset

public final long offset

The file offset to begin with.

Constructor Detail

ReadableRegion

public ReadableRegion(int numSkip,
                      int numReadable,
                      long offset)