com.netflix.genie.web.services

Interface ClusterLoadBalancer

All Known Implementing Classes:

RandomizedClusterLoadBalancerImpl, ScriptLoadBalancer

@Validated
public interface ClusterLoadBalancer

Interface for the cluster load-balancer, which returns the "best" cluster to run job on from an array of candidates.

Since:

2.0.0

Method Summary

Modifier and Type	Method and Description
com.netflix.genie.common.internal.dto.v4.Cluster	selectCluster(@NonNull @NotEmpty java.util.Set<com.netflix.genie.common.internal.dto.v4.Cluster> clusters, @NonNull com.netflix.genie.common.dto.JobRequest jobRequest) Return best cluster to run job on.

Method Detail

selectCluster

@Nullable
com.netflix.genie.common.internal.dto.v4.Cluster selectCluster(@Nonnull @NonNull @NotEmpty
                                                                         @NonNull @NotEmpty java.util.Set<com.netflix.genie.common.internal.dto.v4.Cluster> clusters,
                                                                         @Nonnull @NonNull
                                                                         @NonNull com.netflix.genie.common.dto.JobRequest jobRequest)
                                                                  throws com.netflix.genie.common.exceptions.GenieException

Return best cluster to run job on.

Parameters:

clusters - An immutable, non-empty list of available clusters to choose from

jobRequest - The job request these clusters are being load balanced for

Returns:

the "best" cluster to run job on or null if no cluster selected

Throws:

com.netflix.genie.common.exceptions.GenieException - if there is any error