Examples of com.linkedin.helix.controller.stages.ResourceComputationStage

Package com.linkedin.helix.controller.stages

Examples of com.linkedin.helix.controller.stages.ResourceComputationStage

com.linkedin.helix.controller.stages.ResourceComputationStage
This stage computes all the resources in a cluster. The resources are computed from IdealStates -> this gives all the resources currently active CurrentState for liveInstance-> Helps in finding resources that are inactive and needs to be dropped @author kgopalak

      Pipeline dataRefresh = new Pipeline();
      dataRefresh.addStage(new ReadClusterDataStage());


      // rebalance pipeline
      Pipeline rebalancePipeline = new Pipeline();
      rebalancePipeline.addStage(new ResourceComputationStage());
      rebalancePipeline.addStage(new CurrentStateComputationStage());
      rebalancePipeline.addStage(new BestPossibleStateCalcStage());
      rebalancePipeline.addStage(new MessageGenerationPhase());
      rebalancePipeline.addStage(new MessageSelectionStage());
      rebalancePipeline.addStage(new MessageThrottleStage());

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  static BestPossibleStateOutput calcBestPossState(ClusterDataCache cache) throws Exception
  {
    ClusterEvent event = new ClusterEvent("sampleEvent");
    event.addAttribute("ClusterDataCache", cache);


    ResourceComputationStage rcState = new ResourceComputationStage();
    CurrentStateComputationStage csStage = new CurrentStateComputationStage();
    BestPossibleStateCalcStage bpStage = new BestPossibleStateCalcStage();


    runStage(event, rcState);
    runStage(event, csStage);

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      Pipeline dataRefresh = new Pipeline();
      dataRefresh.addStage(new ReadClusterDataStage());


      // rebalance pipeline
      Pipeline rebalancePipeline = new Pipeline();
      rebalancePipeline.addStage(new ResourceComputationStage());
      rebalancePipeline.addStage(new CurrentStateComputationStage());
      rebalancePipeline.addStage(new BestPossibleStateCalcStage());
      rebalancePipeline.addStage(new MessageGenerationPhase());
      rebalancePipeline.addStage(new MessageSelectionStage());
      rebalancePipeline.addStage(new MessageThrottleStage());

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Related Classes of com.linkedin.helix.controller.stages.ResourceComputationStage

com.linkedin.helix.controller.GenericHelixController

com.linkedin.helix.model.Resource

com.linkedin.helix.tools.ClusterStateVerifier

com.linkedin.helix.controller.pipeline.StageException

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