org.apache.flink.runtime.io.network

Interface PartitionRequestClient

All Known Implementing Classes:

NettyPartitionRequestClient

public interface PartitionRequestClient

Client to send messages or task events via network for RemoteInputChannel.

Method Summary

Modifier and Type	Method and Description
void	close(RemoteInputChannel inputChannel) Cancels the partition request for the given remote input channel and removes this client from factory if it is not referenced by any other input channels.
void	notifyCreditAvailable(RemoteInputChannel inputChannel) Notifies available credits from one remote input channel.
void	requestSubpartition(ResultPartitionID partitionId, int subpartitionIndex, RemoteInputChannel inputChannel, int delayMs) Requests a remote sub partition.
void	sendTaskEvent(ResultPartitionID partitionId, TaskEvent event, RemoteInputChannel inputChannel) Sends a task event backwards to an intermediate result partition.

Method Detail

requestSubpartition

void requestSubpartition(ResultPartitionID partitionId,
                         int subpartitionIndex,
                         RemoteInputChannel inputChannel,
                         int delayMs)
                  throws IOException

Requests a remote sub partition.

Parameters:

partitionId - The identifier of result partition to be requested.

subpartitionIndex - The sub partition index in the requested result partition.

inputChannel - The remote input channel for requesting the sub partition.

delayMs - The request is scheduled within a delay time.

Throws:

IOException

notifyCreditAvailable

void notifyCreditAvailable(RemoteInputChannel inputChannel)

Notifies available credits from one remote input channel.

Parameters:

inputChannel - The remote input channel who announces the available credits.

sendTaskEvent

void sendTaskEvent(ResultPartitionID partitionId,
                   TaskEvent event,
                   RemoteInputChannel inputChannel)
            throws IOException

Sends a task event backwards to an intermediate result partition.

Parameters:

partitionId - The identifier of result partition.

event - The task event to be sent.

inputChannel - The remote input channel for sending this event.

Throws:

IOException

close

void close(RemoteInputChannel inputChannel)
    throws IOException

Cancels the partition request for the given remote input channel and removes this client from factory if it is not referenced by any other input channels.

Parameters:

inputChannel - The remote input channel for canceling partition and to be removed from network stack.

Throws:

IOException