Method computeEvalCost

fe/src/main/java/org/apache/impala/analysis/Expr.java:618–618

Compute and return evalcost of this expr given the evalcost of all children has been computed. Should be called bottom-up whenever the structure of subtree is modified.

()

   * computed. Should be called bottom-up whenever the structure of subtree is modified.
   */
  abstract protected float computeEvalCost();

  protected void computeNumDistinctValues() {
    if (isConstant()) {