org.apache.flink.runtime.io.disk.iomanager

类 AsynchronousBlockWriterWithCallback

java.lang.Object

org.apache.flink.runtime.io.disk.iomanager.AbstractFileIOChannel

org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel<org.apache.flink.core.memory.MemorySegment,org.apache.flink.runtime.io.disk.iomanager.WriteRequest>

org.apache.flink.runtime.io.disk.iomanager.AsynchronousBlockWriterWithCallback

所有已实现的接口:

BlockChannelWriterWithCallback<org.apache.flink.core.memory.MemorySegment>, FileIOChannel

直接已知子类:

AsynchronousBlockWriter

public class AsynchronousBlockWriterWithCallback
extends AsynchronousFileIOChannel<org.apache.flink.core.memory.MemorySegment,org.apache.flink.runtime.io.disk.iomanager.WriteRequest>
implements BlockChannelWriterWithCallback<org.apache.flink.core.memory.MemorySegment>

An asynchronous implementation of the BlockChannelWriterWithCallback that queues I/O requests and calls a callback once they have been handled.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

FileIOChannel.Enumerator, FileIOChannel.ID

字段概要

从类继承的字段 org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel

closed, closeLock, exception, requestQueue, requestsNotReturned, resultHandler

从类继承的字段 org.apache.flink.runtime.io.disk.iomanager.AbstractFileIOChannel

fileChannel, id, LOG

构造器概要

构造器

限定符	构造器和说明
protected	AsynchronousBlockWriterWithCallback(FileIOChannel.ID channelID, RequestQueue<org.apache.flink.runtime.io.disk.iomanager.WriteRequest> requestQueue, RequestDoneCallback<org.apache.flink.core.memory.MemorySegment> callback) Creates a new asynchronous block writer for the given channel.

方法概要

限定符和类型	方法和说明
void	writeBlock(org.apache.flink.core.memory.MemorySegment segment) Issues a asynchronous write request to the writer.

从类继承的方法 org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel

addRequest, checkErroneous, close, closeAndDelete, handleProcessedBuffer, isClosed, registerAllRequestsProcessedListener

从类继承的方法 org.apache.flink.runtime.io.disk.iomanager.AbstractFileIOChannel

deleteChannel, getChannelID, getNioFileChannel, getSize

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

close, closeAndDelete, deleteChannel, getChannelID, getNioFileChannel, getSize, isClosed

构造器详细资料

AsynchronousBlockWriterWithCallback

protected AsynchronousBlockWriterWithCallback(FileIOChannel.ID channelID,
                                              RequestQueue<org.apache.flink.runtime.io.disk.iomanager.WriteRequest> requestQueue,
                                              RequestDoneCallback<org.apache.flink.core.memory.MemorySegment> callback)
                                       throws IOException

Creates a new asynchronous block writer for the given channel.

参数:

channelID - The ID of the channel to write to.

requestQueue - The request queue of the asynchronous writer thread, to which the I/O requests are added.

callback - The callback to be invoked when requests are done.

抛出:

IOException - Thrown, if the underlying file channel could not be opened exclusively.

方法详细资料

writeBlock

public void writeBlock(org.apache.flink.core.memory.MemorySegment segment)
                throws IOException

Issues a asynchronous write request to the writer.

指定者:

writeBlock 在接口中 BlockChannelWriterWithCallback<org.apache.flink.core.memory.MemorySegment>

参数:

segment - The segment to be written.

抛出:

IOException - Thrown, when the writer encounters an I/O error. Due to the asynchronous nature of the writer, the exception thrown here may have been caused by an earlier write request.