org.apache.flink.runtime.io.network

Class ChannelManager

java.lang.Object

org.apache.flink.runtime.io.network.ChannelManager

All Implemented Interfaces:

BufferProviderBroker, EnvelopeDispatcher

public class ChannelManager
extends Object
implements EnvelopeDispatcher, BufferProviderBroker

The channel manager sets up the network buffers and dispatches data between channels.

Constructor Summary

Constructors

Constructor and Description
ChannelManager(ChannelLookupProtocol channelLookupService, InstanceConnectionInfo connectionInfo, int numNetworkBuffers, int networkBufferSize, NetworkConnectionManager networkConnectionManager)

Method Summary

Methods

Modifier and Type	Method and Description
void	dispatchFromInputChannel(Envelope envelope) Dispatches an envelope from an input channel to the receiving output channels (backwards flow).
void	dispatchFromNetwork(Envelope envelope) Dispatches an envelope from an incoming TCP connection.
void	dispatchFromOutputChannel(Envelope envelope) Dispatches an envelope from an output channel to the receiving input channels (forward flow).
BufferProvider	getBufferProvider(JobID jobID, ChannelID sourceChannelID)
GlobalBufferPool	getGlobalBufferPool()
NetworkConnectionManager	getNetworkConnectionManager()
void	invalidateLookupCacheEntries(Set<ChannelID> channelIDs) Invalidates the entries identified by the given channel IDs from the receiver lookup cache.
void	logBufferUtilization()
void	register(Task task) Registers the given task with the channel manager.
void	shutdown()
void	unregister(ExecutionAttemptID executionId, Task task) Unregisters the given task from the channel manager.
void	verifyAllCachesEmpty()

Methods inherited from class java.lang.Object

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

Constructor Detail

ChannelManager

public ChannelManager(ChannelLookupProtocol channelLookupService,
              InstanceConnectionInfo connectionInfo,
              int numNetworkBuffers,
              int networkBufferSize,
              NetworkConnectionManager networkConnectionManager)
               throws IOException

Throws:

IOException

Method Detail

shutdown

public void shutdown()
              throws IOException

Throws:

IOException

getGlobalBufferPool

public GlobalBufferPool getGlobalBufferPool()

getNetworkConnectionManager

public NetworkConnectionManager getNetworkConnectionManager()

register

public void register(Task task)
              throws InsufficientResourcesException

Registers the given task with the channel manager.

Parameters:

task - the task to be registered

Throws:

InsufficientResourcesException - thrown if not enough buffers available to safely run this task

unregister

public void unregister(ExecutionAttemptID executionId,
              Task task)

Unregisters the given task from the channel manager.

Parameters:

executionId - the ID of the task to be unregistered

task - the task to be unregistered

invalidateLookupCacheEntries

public void invalidateLookupCacheEntries(Set<ChannelID> channelIDs)

Invalidates the entries identified by the given channel IDs from the receiver lookup cache.

Parameters:

channelIDs - channel IDs for entries to invalidate

dispatchFromOutputChannel

public void dispatchFromOutputChannel(Envelope envelope)
                               throws IOException,
                                      InterruptedException

Description copied from interface: EnvelopeDispatcher

Dispatches an envelope from an output channel to the receiving input channels (forward flow).

Specified by:

dispatchFromOutputChannel in interface EnvelopeDispatcher

Parameters:

envelope - envelope to be sent

Throws:

IOException

InterruptedException

dispatchFromInputChannel

public void dispatchFromInputChannel(Envelope envelope)
                              throws IOException,
                                     InterruptedException

Description copied from interface: EnvelopeDispatcher

Dispatches an envelope from an input channel to the receiving output channels (backwards flow).

Specified by:

dispatchFromInputChannel in interface EnvelopeDispatcher

Parameters:

envelope - envelope to be sent

Throws:

IOException

InterruptedException

dispatchFromNetwork

public void dispatchFromNetwork(Envelope envelope)
                         throws IOException,
                                InterruptedException

Description copied from interface: EnvelopeDispatcher

Dispatches an envelope from an incoming TCP connection.

After an envelope has been constructed from a TCP socket, this method is called to send the envelope to the receiving input channel.

Specified by:

dispatchFromNetwork in interface EnvelopeDispatcher

Parameters:

envelope - envelope to be sent

Throws:

IOException

InterruptedException

getBufferProvider

public BufferProvider getBufferProvider(JobID jobID,
                               ChannelID sourceChannelID)
                                 throws IOException

Specified by:

getBufferProvider in interface BufferProviderBroker

Throws:

IOException

logBufferUtilization

public void logBufferUtilization()

verifyAllCachesEmpty

public void verifyAllCachesEmpty()