src/main/java/org/apache/datasketches/pig/hll/UnionSketch.java [108:124]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  public DataByteArray exec(final Tuple inputTuple) throws IOException {
    if (this.isFirstCall_) {
      Logger.getLogger(getClass()).info("Exec was used");
      this.isFirstCall_ = false;
    }
    if (inputTuple == null || inputTuple.size() == 0) {
      if (this.emptySketch_ == null) {
        this.emptySketch_ = 
          new DataByteArray(new HllSketch(this.lgK_, this.tgtHllType_).toCompactByteArray());
      }
      return this.emptySketch_;
    }
    final Union union = new Union(this.lgK_);
    final DataBag bag = (DataBag) inputTuple.get(0);
    updateUnion(bag, union);
    return new DataByteArray(union.getResult(this.tgtHllType_).toCompactByteArray());
  }
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



src/main/java/org/apache/datasketches/pig/hll/DataToSketch.java [122:138]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  public DataByteArray exec(final Tuple inputTuple) throws IOException {
    if (this.isFirstCall_) {
      Logger.getLogger(getClass()).info("Exec was used");
      this.isFirstCall_ = false;
    }
    if (inputTuple == null || inputTuple.size() == 0) {
      if (this.emptySketch_ == null) {
        this.emptySketch_ = 
            new DataByteArray(new HllSketch(this.lgK_, this.tgtHllType_).toCompactByteArray());
      }
      return this.emptySketch_;
    }
    final Union union = new Union(this.lgK_);
    final DataBag bag = (DataBag) inputTuple.get(0);
    updateUnion(bag, union);
    return new DataByteArray(union.getResult(this.tgtHllType_).toCompactByteArray());
  }
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -