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

类 BufferWritingResultPartition

java.lang.Object

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

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

所有已实现的接口:

AutoCloseable, AvailabilityProvider, ResultPartitionWriter

直接已知子类:

BoundedBlockingResultPartition, PipelinedResultPartition

public abstract class BufferWritingResultPartition
extends ResultPartition

A ResultPartition which writes buffers directly to ResultSubpartitions. This is in contrast to implementations where records are written to a joint structure, from which the subpartitions draw the data after the write phase is finished, for example the sort-based partitioning.

To avoid confusion: On the read side, all subpartitions return buffers (and backlog) to be transported through the network.

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

字段

限定符和类型	字段和说明
protected ResultSubpartition[]	subpartitions The subpartitions of this partition.

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
BufferWritingResultPartition(String owningTaskName, int partitionIndex, ResultPartitionID partitionId, ResultPartitionType partitionType, ResultSubpartition[] subpartitions, int numTargetKeyGroups, ResultPartitionManager partitionManager, 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.
protected void	flushAllSubpartitions(boolean finishProducers)
protected void	flushSubpartition(int targetSubpartition, boolean finishProducers)
ResultSubpartition[]	getAllPartitions()
TimerGauge	getBackPressuredTimeMsPerSecond()
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.
protected void	releaseInternal() Releases all produced data including both those stored in memory and persisted on disk.
void	setMetricGroup(TaskIOMetricGroup metrics) Sets the metric group for the ResultPartitionWriter.
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, getAvailableFuture, getBufferPool, getFailureCause, getNumberOfSubpartitions, getNumTargetKeyGroups, getOwningTaskName, getPartitionId, getPartitionIndex, getPartitionManager, getPartitionType, isFinished, isReleased, notifyEndOfData, onSubpartitionAllDataProcessed, release, release, 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.network.api.writer.ResultPartitionWriter

flush, flushAll

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

and, isApproximatelyAvailable, isAvailable, or

字段详细资料

subpartitions

protected final ResultSubpartition[] subpartitions

The subpartitions of this partition. At least one.

构造器详细资料

BufferWritingResultPartition

public BufferWritingResultPartition(String owningTaskName,
                                    int partitionIndex,
                                    ResultPartitionID partitionId,
                                    ResultPartitionType partitionType,
                                    ResultSubpartition[] subpartitions,
                                    int numTargetKeyGroups,
                                    ResultPartitionManager partitionManager,
                                    @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

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

flushSubpartition

protected void flushSubpartition(int targetSubpartition,
                                 boolean finishProducers)

flushAllSubpartitions

protected void flushAllSubpartitions(boolean finishProducers)

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

setMetricGroup

public void setMetricGroup(TaskIOMetricGroup metrics)

从接口复制的说明: ResultPartitionWriter

Sets the metric group for the ResultPartitionWriter.

指定者:

setMetricGroup 在接口中 ResultPartitionWriter

覆盖:

setMetricGroup 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

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

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

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

getBackPressuredTimeMsPerSecond

@VisibleForTesting
public TimerGauge getBackPressuredTimeMsPerSecond()

getAllPartitions

@VisibleForTesting
public ResultSubpartition[] getAllPartitions()