Package org.apache.helix.controller.rebalancer.context

Examples of org.apache.helix.controller.rebalancer.context.CustomRebalancerContext

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  }

  @Override
  public ResourceAssignment computeResourceMapping(RebalancerConfig rebalancerConfig,
      Cluster cluster, ResourceCurrentState currentState) {
    CustomRebalancerContext config =
        rebalancerConfig.getRebalancerContext(CustomRebalancerContext.class);
    StateModelDefinition stateModelDef =
        cluster.getStateModelMap().get(config.getStateModelDefId());
    if (LOG.isDebugEnabled()) {
      LOG.debug("Processing resource:" + config.getResourceId());
    }
    ResourceAssignment partitionMapping = new ResourceAssignment(config.getResourceId());
    for (PartitionId partition : config.getPartitionSet()) {
      Map<ParticipantId, State> currentStateMap =
          currentState.getCurrentStateMap(config.getResourceId(), partition);
      Set<ParticipantId> disabledInstancesForPartition =
          ConstraintBasedAssignment.getDisabledParticipants(cluster.getParticipantMap(), partition);
      Map<ParticipantId, State> bestStateForPartition =
          ConstraintBasedAssignment.computeCustomizedBestStateForPartition(cluster
              .getLiveParticipantMap().keySet(), stateModelDef, config.getPreferenceMap(partition),
              currentStateMap, disabledInstancesForPartition);
      partitionMapping.addReplicaMap(partition, bestStateForPartition);
    }
    return partitionMapping;
  }
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            config.getRebalancerContext(SemiAutoRebalancerContext.class);
        for (PartitionId partitionId : semiAutoContext.getPartitionSet()) {
          idealState.setPreferenceList(partitionId, semiAutoContext.getPreferenceList(partitionId));
        }
      } else if (partitionedContext.getRebalanceMode() == RebalanceMode.CUSTOMIZED) {
        CustomRebalancerContext customContext =
            config.getRebalancerContext(CustomRebalancerContext.class);
        for (PartitionId partitionId : customContext.getPartitionSet()) {
          idealState.setParticipantStateMap(partitionId,
              customContext.getPreferenceMap(partitionId));
        }
      } else {
        for (PartitionId partitionId : partitionedContext.getPartitionSet()) {
          List<ParticipantId> preferenceList = Collections.emptyList();
          idealState.setPreferenceList(partitionId, preferenceList);
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      if (partitionedContext.getRebalanceMode() == RebalanceMode.SEMI_AUTO) {
        SemiAutoRebalancerContext semiAutoContext =
            resource.getRebalancerConfig().getRebalancerContext(SemiAutoRebalancerContext.class);
        sb.append(", preferenceList: " + semiAutoContext.getPreferenceList(partitionId));
      } else if (partitionedContext.getRebalanceMode() == RebalanceMode.CUSTOMIZED) {
        CustomRebalancerContext customContext =
            resource.getRebalancerConfig().getRebalancerContext(CustomRebalancerContext.class);
        sb.append(", preferenceMap: " + customContext.getPreferenceMap(partitionId));
      }
      if (partitionedContext.anyLiveParticipant()) {
        sb.append(", anyLiveParticipant: " + partitionedContext.anyLiveParticipant());
      } else {
        sb.append(", replicaCount: " + partitionedContext.getReplicaCount());
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Related Classes of org.apache.helix.controller.rebalancer.context.CustomRebalancerContext

  • org.apache.helix.api.accessor.ResourceAccessor
  • org.apache.helix.controller.rebalancer.CustomRebalancer
  • org.apache.helix.controller.strategy.AutoRebalanceStrategy
  • org.apache.helix.controller.strategy.AutoRebalanceStrategy.DefaultPlacementScheme
  • org.apache.helix.controller.strategy.AutoRebalanceStrategy.ReplicaPlacementScheme
  • org.apache.helix.tools.NewClusterSetup
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