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

类 SortMergeResultPartition

java.lang.Object

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

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

所有已实现的接口:

AutoCloseable, AvailabilityProvider, ResultPartitionWriter

@NotThreadSafe
public class SortMergeResultPartition
extends ResultPartition

SortMergeResultPartition appends records and events to SortBuffer and after the SortBuffer is full, all data in the SortBuffer will be copied and spilled to a PartitionedFile in subpartition index order sequentially. Large records that can not be appended to an empty SortBuffer will be spilled to the result PartitionedFile separately.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.runtime.io.AvailabilityProvider

AvailabilityProvider.AvailabilityHelper

字段概要

从类继承的字段 org.apache.flink.runtime.io.network.partition.ResultPartition

bufferCompressor, bufferPool, LOG, numBuffersOut, numBytesOut, numSubpartitions, partitionId, partitionManager, partitionType

从接口继承的字段 org.apache.flink.runtime.io.AvailabilityProvider

AVAILABLE

构造器概要

构造器

构造器和说明

SortMergeResultPartition(String owningTaskName, int partitionIndex, ResultPartitionID partitionId, ResultPartitionType partitionType, int numSubpartitions, int numTargetKeyGroups, BatchShuffleReadBufferPool readBufferPool, Executor readIOExecutor, ResultPartitionManager partitionManager, String resultFileBasePath, BufferCompressor bufferCompressor, org.apache.flink.util.function.SupplierWithException<BufferPool,IOException> bufferPoolFactory)

方法概要

限定符和类型	方法和说明
void	broadcastEvent(AbstractEvent event, boolean isPriorityEvent) Writes the given AbstractEvent to all channels.
void	broadcastRecord(ByteBuffer record) Writes the given serialized record to all subpartitions.
void	close() Closes the partition writer which releases the allocated resource, for example the buffer pool.
ResultSubpartitionView	createSubpartitionView(int subpartitionIndex, BufferAvailabilityListener availabilityListener) Returns a reader for the subpartition with the given index.
void	emitRecord(ByteBuffer record, int targetSubpartition) Writes the given serialized record to the target subpartition.
void	finish() Finishes the result partition.
void	flush(int subpartitionIndex) Manually trigger the consumption of data from the given subpartitions.
void	flushAll() Manually trigger the consumption of data from all subpartitions.
CompletableFuture<?>	getAvailableFuture()
int	getNumberOfQueuedBuffers() Returns the total number of queued buffers of all subpartitions.
int	getNumberOfQueuedBuffers(int targetSubpartition) Returns the number of queued buffers of the given target subpartition.
void	notifyEndOfData() Notifies the downstream tasks that this ResultPartitionWriter have emitted all the user records.
protected void	releaseInternal() Releases all produced data including both those stored in memory and persisted on disk.
void	setup() Registers a buffer pool with this result partition.

从类继承的方法 org.apache.flink.runtime.io.network.partition.ResultPartition

canBeCompressed, checkInProduceState, fail, getAllDataProcessedFuture, getBufferPool, getFailureCause, getNumberOfSubpartitions, getNumTargetKeyGroups, getOwningTaskName, getPartitionId, getPartitionIndex, getPartitionManager, getPartitionType, isFinished, isReleased, onSubpartitionAllDataProcessed, release, release, setMetricGroup, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.runtime.io.AvailabilityProvider

and, isApproximatelyAvailable, isAvailable, or

构造器详细资料

SortMergeResultPartition

public SortMergeResultPartition(String owningTaskName,
                                int partitionIndex,
                                ResultPartitionID partitionId,
                                ResultPartitionType partitionType,
                                int numSubpartitions,
                                int numTargetKeyGroups,
                                BatchShuffleReadBufferPool readBufferPool,
                                Executor readIOExecutor,
                                ResultPartitionManager partitionManager,
                                String resultFileBasePath,
                                @Nullable
                                BufferCompressor bufferCompressor,
                                org.apache.flink.util.function.SupplierWithException<BufferPool,IOException> bufferPoolFactory)

方法详细资料

setup

public void setup()
           throws IOException

从类复制的说明: ResultPartition

Registers a buffer pool with this result partition.

There is one pool for each result partition, which is shared by all its sub partitions.

The pool is registered with the partition *after* it as been constructed in order to conform to the life-cycle of task registrations in the TaskExecutor.

指定者:

setup 在接口中 ResultPartitionWriter

覆盖:

setup 在类中 ResultPartition

抛出:

IOException

releaseInternal

protected void releaseInternal()

从类复制的说明: ResultPartition

Releases all produced data including both those stored in memory and persisted on disk.

指定者:

releaseInternal 在类中 ResultPartition

emitRecord

public void emitRecord(ByteBuffer record,
                       int targetSubpartition)
                throws IOException

从接口复制的说明: ResultPartitionWriter

Writes the given serialized record to the target subpartition.

抛出:

IOException

broadcastRecord

public void broadcastRecord(ByteBuffer record)
                     throws IOException

从接口复制的说明: ResultPartitionWriter

Writes the given serialized record to all subpartitions. One can also achieve the same effect by emitting the same record to all subpartitions one by one, however, this method can have better performance for the underlying implementation can do some optimizations, for example coping the given serialized record only once to a shared channel which can be consumed by all subpartitions.

抛出:

IOException

broadcastEvent

public void broadcastEvent(AbstractEvent event,
                           boolean isPriorityEvent)
                    throws IOException

从接口复制的说明: ResultPartitionWriter

Writes the given AbstractEvent to all channels.

抛出:

IOException

notifyEndOfData

public void notifyEndOfData()
                     throws IOException

从接口复制的说明: ResultPartitionWriter

Notifies the downstream tasks that this ResultPartitionWriter have emitted all the user records.

指定者:

notifyEndOfData 在接口中 ResultPartitionWriter

覆盖:

notifyEndOfData 在类中 ResultPartition

抛出:

IOException

finish

public void finish()
            throws IOException

从类复制的说明: ResultPartition

Finishes the result partition.

After this operation, it is not possible to add further data to the result partition.

For BLOCKING results, this will trigger the deployment of consuming tasks.

指定者:

finish 在接口中 ResultPartitionWriter

覆盖:

finish 在类中 ResultPartition

抛出:

IOException

close

public void close()

从接口复制的说明: ResultPartitionWriter

Closes the partition writer which releases the allocated resource, for example the buffer pool.

指定者:

close 在接口中 AutoCloseable

指定者:

close 在接口中 ResultPartitionWriter

覆盖:

close 在类中 ResultPartition

createSubpartitionView

public ResultSubpartitionView createSubpartitionView(int subpartitionIndex,
                                                     BufferAvailabilityListener availabilityListener)
                                              throws IOException

从接口复制的说明: ResultPartitionWriter

Returns a reader for the subpartition with the given index.

抛出:

IOException

flushAll

public void flushAll()

从接口复制的说明: ResultPartitionWriter

Manually trigger the consumption of data from all subpartitions.

flush

public void flush(int subpartitionIndex)

从接口复制的说明: ResultPartitionWriter

Manually trigger the consumption of data from the given subpartitions.

getAvailableFuture

public CompletableFuture<?> getAvailableFuture()

指定者:

getAvailableFuture 在接口中 AvailabilityProvider

覆盖:

getAvailableFuture 在类中 ResultPartition

返回:

a future that is completed if the respective provider is available.

getNumberOfQueuedBuffers

public int getNumberOfQueuedBuffers()

从类复制的说明: ResultPartition

Returns the total number of queued buffers of all subpartitions.

指定者:

getNumberOfQueuedBuffers 在类中 ResultPartition

getNumberOfQueuedBuffers

public int getNumberOfQueuedBuffers(int targetSubpartition)

从类复制的说明: ResultPartition

Returns the number of queued buffers of the given target subpartition.

指定者:

getNumberOfQueuedBuffers 在类中 ResultPartition