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

枚举 BoundedBlockingSubpartitionType

java.lang.Object

java.lang.Enum<BoundedBlockingSubpartitionType>

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

所有已实现的接口:

Serializable, Comparable<BoundedBlockingSubpartitionType>

public enum BoundedBlockingSubpartitionType
extends Enum<BoundedBlockingSubpartitionType>

The type of the BoundedBlockingSubpartition. Also doubles as the factory.

枚举常量概要

枚举常量

枚举常量和说明
AUTO Selects the BoundedBlockingSubpartition type based on the current memory architecture.
FILE A BoundedBlockingSubpartition type that simply stores the partition data in a file.
FILE_MMAP Creates a BoundedBlockingSubpartition that stores the partition data in a file and memory maps that file for reading.
MMAP A BoundedBlockingSubpartition type that stores the partition data in memory mapped file.

方法概要

限定符和类型	方法和说明
abstract org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartition	create(int index, ResultPartition parent, File tempFile, int readBufferSize, boolean sslEnabled) Creates BoundedBlockingSubpartition of this type.
static BoundedBlockingSubpartitionType	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static BoundedBlockingSubpartitionType[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

FILE

public static final BoundedBlockingSubpartitionType FILE

A BoundedBlockingSubpartition type that simply stores the partition data in a file. Data is eagerly spilled (written to disk) and readers directly read from the file.

MMAP

public static final BoundedBlockingSubpartitionType MMAP

A BoundedBlockingSubpartition type that stores the partition data in memory mapped file. Data is written to and read from the mapped memory region. Disk spilling happens lazily, when the OS swaps out the pages from the memory mapped file.

FILE_MMAP

public static final BoundedBlockingSubpartitionType FILE_MMAP

Creates a BoundedBlockingSubpartition that stores the partition data in a file and memory maps that file for reading. Data is eagerly spilled (written to disk) and then mapped into memory. The main difference to the MMAP variant is that no I/O is necessary when pages from the memory mapped file are evicted.

AUTO

public static final BoundedBlockingSubpartitionType AUTO

Selects the BoundedBlockingSubpartition type based on the current memory architecture. If 64-bit, the type of FILE_MMAP is recommended. Otherwise, the type of FILE is by default.

方法详细资料

values

public static BoundedBlockingSubpartitionType[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (BoundedBlockingSubpartitionType c : BoundedBlockingSubpartitionType.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static BoundedBlockingSubpartitionType valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

create

public abstract org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartition create(int index,
                                                                                                 ResultPartition parent,
                                                                                                 File tempFile,
                                                                                                 int readBufferSize,
                                                                                                 boolean sslEnabled)
                                                                                          throws IOException

Creates BoundedBlockingSubpartition of this type.

抛出:

IOException