How to use

getPredecessorNode

method

in

org.apache.flink.optimizer.dag.ReduceNode

  public ReduceNode getCombinerUtilityNode() {
    if (this.preReduceUtilityNode == null) {
      this.preReduceUtilityNode = new ReduceNode(this);
      
      // we conservatively assume the combiner returns the same data size as it consumes 
      this.preReduceUtilityNode.estimatedOutputSize = getPredecessorNode().getEstimatedOutputSize();
      this.preReduceUtilityNode.estimatedNumRecords = getPredecessorNode().getEstimatedNumRecords();
    }
    return this.preReduceUtilityNode;
  }
}

  public ReduceNode getCombinerUtilityNode() {
    if (this.preReduceUtilityNode == null) {
      this.preReduceUtilityNode = new ReduceNode(this);
      
      // we conservatively assume the combiner returns the same data size as it consumes 
      this.preReduceUtilityNode.estimatedOutputSize = getPredecessorNode().getEstimatedOutputSize();
      this.preReduceUtilityNode.estimatedNumRecords = getPredecessorNode().getEstimatedNumRecords();
    }
    return this.preReduceUtilityNode;
  }
}

  public ReduceNode getCombinerUtilityNode() {
    if (this.preReduceUtilityNode == null) {
      this.preReduceUtilityNode = new ReduceNode(this);
      
      // we conservatively assume the combiner returns the same data size as it consumes 
      this.preReduceUtilityNode.estimatedOutputSize = getPredecessorNode().getEstimatedOutputSize();
      this.preReduceUtilityNode.estimatedNumRecords = getPredecessorNode().getEstimatedNumRecords();
    }
    return this.preReduceUtilityNode;
  }
}

  public ReduceNode getCombinerUtilityNode() {
    if (this.preReduceUtilityNode == null) {
      this.preReduceUtilityNode = new ReduceNode(this);
      
      // we conservatively assume the combiner returns the same data size as it consumes 
      this.preReduceUtilityNode.estimatedOutputSize = getPredecessorNode().getEstimatedOutputSize();
      this.preReduceUtilityNode.estimatedNumRecords = getPredecessorNode().getEstimatedNumRecords();
    }
    return this.preReduceUtilityNode;
  }
}

  public ReduceNode getCombinerUtilityNode() {
    if (this.preReduceUtilityNode == null) {
      this.preReduceUtilityNode = new ReduceNode(this);
      
      // we conservatively assume the combiner returns the same data size as it consumes 
      this.preReduceUtilityNode.estimatedOutputSize = getPredecessorNode().getEstimatedOutputSize();
      this.preReduceUtilityNode.estimatedNumRecords = getPredecessorNode().getEstimatedNumRecords();
    }
    return this.preReduceUtilityNode;
  }
}