com.sun.sgs.impl.service.nodemap.affinity
Interface LPAAffinityGroupFinder

All Superinterfaces:

AffinityGroupFinder

All Known Implementing Classes:

DistGraphBuilderServerImpl, LabelPropagationServer, SingleLabelPropagation

public interface LPAAffinityGroupFinder
extends AffinityGroupFinder

The affinity group finder finds affinity groups within a Darkstar cluster using the LPA algorithm.

Method Summary

NavigableSet<RelocatingAffinityGroup>

findAffinityGroups() Finds affinity groups across all nodes in the Darkstar cluster.

Methods inherited from interface com.sun.sgs.impl.service.nodemap.affinity.AffinityGroupFinder

disable, enable, shutdown

Method Detail

findAffinityGroups

NavigableSet<RelocatingAffinityGroup> findAffinityGroups()
                                                         throws AffinityGroupFinderFailedException

Finds affinity groups across all nodes in the Darkstar cluster. If no groups are found, an empty set is returned. If an error is encountered during a run, an AffinityGroupFinderFailedException is thrown. Errors include nodes not responding to server requests.

Returns:

the affinity groups, or an empty set if none are found

Throws:

AffinityGroupFinderFailedException - if there is an error

IllegalStateException - if the finder is disabled or shut down