src/main/java/org/apache/datasketches/pig/quantiles/DataToItemsSketch.java [206:218]:
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  public Tuple getValue() {
    if (this.accumUnion_ != null) {
      final ItemsSketch<T> resultSketch = this.accumUnion_.getResultAndReset();
      if (resultSketch != null) {
        return tupleFactory_.newTuple(new DataByteArray(resultSketch.toByteArray(this.serDe_)));
      }
    }
    // return empty sketch
    final ItemsSketch<T> sketch = this.k_ > 0
        ? ItemsSketch.getInstance(this.k_, this.comparator_)
        : ItemsSketch.getInstance(this.comparator_);
    return tupleFactory_.newTuple(new DataByteArray(sketch.toByteArray(this.serDe_)));
  }
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src/main/java/org/apache/datasketches/pig/quantiles/UnionItemsSketch.java [187:199]:
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  public Tuple getValue() {
    if (this.accumUnion_ != null) {
      final ItemsSketch<T> resultSketch = this.accumUnion_.getResultAndReset();
      if (resultSketch != null) {
        return tupleFactory_.newTuple(new DataByteArray(resultSketch.toByteArray(this.serDe_)));
      }
    }
    // return empty sketch
    final ItemsSketch<T> sketch = this.k_ > 0
        ? ItemsSketch.getInstance(this.k_, this.comparator_)
        : ItemsSketch.getInstance(this.comparator_);
    return tupleFactory_.newTuple(new DataByteArray(sketch.toByteArray(this.serDe_)));
  }
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