org.apache.flink.runtime.protocols

Interface ChannelLookupProtocol

All Superinterfaces:

VersionedProtocol

All Known Implementing Classes:

JobManager

public interface ChannelLookupProtocol
extends VersionedProtocol

The channel lookup protocol can be used to resolve the ID of an output channel to all recipients which shall receive the data of this channel.

Method Summary

Methods

Modifier and Type	Method and Description
ConnectionInfoLookupResponse	lookupConnectionInfo(InstanceConnectionInfo caller, JobID jobID, ChannelID sourceChannelID) Retrieves all recipients of a data for the given sourceChannelID.

Method Detail

lookupConnectionInfo

ConnectionInfoLookupResponse lookupConnectionInfo(InstanceConnectionInfo caller,
                                                JobID jobID,
                                                ChannelID sourceChannelID)
                                                  throws IOException

Retrieves all recipients of a data for the given sourceChannelID.

Parameters:

caller - the InstanceConnectionInfo object of the task manager which calls this method

jobID - the ID of the job the channel ID belongs to

sourceChannelID - the ID of the channel to resolve

Returns:

the lookup response containing the connection info and a return code

Throws:

IOException - thrown if an error occurs during the IPC call