How to use

getEstimatedNumRecords

method

in

org.apache.flink.optimizer.dag.EstimateProvider

@Override
public void addStreamedNestedLoopsCosts(EstimateProvider outerSide, EstimateProvider innerSide, long bufferSize, Costs costs, int costWeight) {
  long is = innerSide.getEstimatedOutputSize(); 
  long oc = outerSide.getEstimatedNumRecords();
  
  if (is > 0 && oc >= 0) {
    // costs, if the inner side cannot be cached
    if (is > bufferSize) {
      costs.addDiskCost(oc * is);
    }
    costs.addCpuCost((long) (oc * is * MATERIALIZATION_CPU_FACTOR));
  } else {
    costs.setDiskCost(Costs.UNKNOWN);
    costs.setCpuCost(Costs.UNKNOWN);
  }
  
  // hack: assume 100k loops (should be expensive enough)
  costs.addHeuristicDiskCost(HEURISTIC_COST_BASE * 100000);
  costs.addHeuristicCpuCost((long) (HEURISTIC_COST_BASE * 100000 * MATERIALIZATION_CPU_FACTOR));
  costs.multiplyWith(costWeight);
}

@Override
public void addStreamedNestedLoopsCosts(EstimateProvider outerSide, EstimateProvider innerSide, long bufferSize, Costs costs, int costWeight) {
  long is = innerSide.getEstimatedOutputSize(); 
  long oc = outerSide.getEstimatedNumRecords();
  
  if (is > 0 && oc >= 0) {
    // costs, if the inner side cannot be cached
    if (is > bufferSize) {
      costs.addDiskCost(oc * is);
    }
    costs.addCpuCost((long) (oc * is * MATERIALIZATION_CPU_FACTOR));
  } else {
    costs.setDiskCost(Costs.UNKNOWN);
    costs.setCpuCost(Costs.UNKNOWN);
  }
  
  // hack: assume 100k loops (should be expensive enough)
  costs.addHeuristicDiskCost(HEURISTIC_COST_BASE * 100000);
  costs.addHeuristicCpuCost((long) (HEURISTIC_COST_BASE * 100000 * MATERIALIZATION_CPU_FACTOR));
  costs.multiplyWith(costWeight);
}

@Override
public void addStreamedNestedLoopsCosts(EstimateProvider outerSide, EstimateProvider innerSide, long bufferSize, Costs costs, int costWeight) {
  long is = innerSide.getEstimatedOutputSize(); 
  long oc = outerSide.getEstimatedNumRecords();
  
  if (is > 0 && oc >= 0) {
    // costs, if the inner side cannot be cached
    if (is > bufferSize) {
      costs.addDiskCost(oc * is);
    }
    costs.addCpuCost((long) (oc * is * MATERIALIZATION_CPU_FACTOR));
  } else {
    costs.setDiskCost(Costs.UNKNOWN);
    costs.setCpuCost(Costs.UNKNOWN);
  }
  
  // hack: assume 100k loops (should be expensive enough)
  costs.addHeuristicDiskCost(HEURISTIC_COST_BASE * 100000);
  costs.addHeuristicCpuCost((long) (HEURISTIC_COST_BASE * 100000 * MATERIALIZATION_CPU_FACTOR));
  costs.multiplyWith(costWeight);
}

@Override
public void addStreamedNestedLoopsCosts(EstimateProvider outerSide, EstimateProvider innerSide, long bufferSize, Costs costs, int costWeight) {
  long is = innerSide.getEstimatedOutputSize(); 
  long oc = outerSide.getEstimatedNumRecords();
  
  if (is > 0 && oc >= 0) {
    // costs, if the inner side cannot be cached
    if (is > bufferSize) {
      costs.addDiskCost(oc * is);
    }
    costs.addCpuCost((long) (oc * is * MATERIALIZATION_CPU_FACTOR));
  } else {
    costs.setDiskCost(Costs.UNKNOWN);
    costs.setCpuCost(Costs.UNKNOWN);
  }
  
  // hack: assume 100k loops (should be expensive enough)
  costs.addHeuristicDiskCost(HEURISTIC_COST_BASE * 100000);
  costs.addHeuristicCpuCost((long) (HEURISTIC_COST_BASE * 100000 * MATERIALIZATION_CPU_FACTOR));
  costs.multiplyWith(costWeight);
}

@Override
public void addStreamedNestedLoopsCosts(EstimateProvider outerSide, EstimateProvider innerSide, long bufferSize, Costs costs, int costWeight) {
  long is = innerSide.getEstimatedOutputSize(); 
  long oc = outerSide.getEstimatedNumRecords();
  
  if (is > 0 && oc >= 0) {
    // costs, if the inner side cannot be cached
    if (is > bufferSize) {
      costs.addDiskCost(oc * is);
    }
    costs.addCpuCost((long) (oc * is * MATERIALIZATION_CPU_FACTOR));
  } else {
    costs.setDiskCost(Costs.UNKNOWN);
    costs.setCpuCost(Costs.UNKNOWN);
  }
  
  // hack: assume 100k loops (should be expensive enough)
  costs.addHeuristicDiskCost(HEURISTIC_COST_BASE * 100000);
  costs.addHeuristicCpuCost((long) (HEURISTIC_COST_BASE * 100000 * MATERIALIZATION_CPU_FACTOR));
  costs.multiplyWith(costWeight);
}