List of computeNewIdealState() Examples

Examples of computeNewIdealState()

org.apache.helix.controller.rebalancer.Rebalancer.computeNewIdealState()
This method provides all the relevant information needed to rebalance a resource. If you need additional information use manager.getAccessor to read the cluster data. This allows one to compute the newIdealState according to app specific requirement. @param resourceName Name of the resource to be rebalanced @param currentIdealState @param currentStateOutput Provides the current state and pending state transition for all partitions @param clusterData Provides additional methods to retrieve cluster data. @return

Examples of org.apache.helix.controller.rebalancer.Rebalancer.computeNewIdealState()

        } else {
          rebalancer = new CustomRebalancer();
          mappingCalculator = new CustomRebalancer();
        }
        idealState =
            rebalancer.computeNewIdealState(resourceName, idealState, currentStateOutput, cache);
      }


      // Use the internal MappingCalculator interface to compute the final assignment
      // The next release will support rebalancers that compute the mapping from start to finish
      if (mappingCalculator != null) {

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Examples of org.apache.helix.controller.rebalancer.Rebalancer.computeNewIdealState()

        try {
          Rebalancer balancer =
              (Rebalancer) (HelixUtil.loadClass(getClass(), rebalancerClassName).newInstance());
          balancer.init(manager);
          IdealState newIdealState =
              balancer.computeNewIdealState(resourceName, idealStateMap.get(resourceName),
                  currentStateOutput, cache);
          updatedIdealStates.put(resourceName, newIdealState);
        } catch (Exception e) {
          LOG.error("Exception while invoking custom rebalancer class:" + rebalancerClassName, e);
        }

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Examples of org.apache.helix.controller.rebalancer.Rebalancer.computeNewIdealState()

      if (rebalancer != null && mappingCalculator != null) {
        try {
          HelixManager manager = event.getAttribute("helixmanager");
          rebalancer.init(manager);
          idealState =
              rebalancer.computeNewIdealState(resourceName, idealState, currentStateOutput, cache);


          // Use the internal MappingCalculator interface to compute the final assignment
          // The next release will support rebalancers that compute the mapping from start to finish
          ResourceAssignment partitionStateAssignment =
              mappingCalculator.computeBestPossiblePartitionState(cache, idealState, resource,

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Examples of org.apache.helix.controller.rebalancer.Rebalancer.computeNewIdealState()

        LOG.info("resource " + resourceName + " use idealStateRebalancer " + rebalancerClassName);
        try
        {
          Rebalancer balancer = (Rebalancer) (Class.forName(rebalancerClassName).newInstance());
          balancer.init(manager);
          IdealState newIdealState = balancer.computeNewIdealState(resourceName, idealStateMap.get(resourceName), currentStateOutput, cache);
          updatedIdealStates.put(resourceName, newIdealState);
        }
        catch(Exception e)
        {
          LOG.error("Exception while invoking custom rebalancer class:" + rebalancerClassName , e);

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