src/main/java/org/apache/datasketches/hive/quantiles/ItemsEvaluator.java [51:65]:
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  public ObjectInspector init(final Mode mode, final ObjectInspector[] parameters) throws HiveException {
    super.init(mode, parameters);
    this.inputObjectInspector = (PrimitiveObjectInspector) parameters[0];

    // Parameters:
    // In PARTIAL1 and COMPLETE mode, the parameters are original data.
    // In PARTIAL2 and FINAL mode, the parameters are partial aggregations.
    if (mode == Mode.PARTIAL1 || mode == Mode.COMPLETE) {
      if (parameters.length > 1) {
        this.kObjectInspector = (PrimitiveObjectInspector) parameters[1];
      }
    }

    return PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.BINARY);
  }
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src/main/java/org/apache/datasketches/hive/quantiles/DoublesEvaluator.java [39:53]:
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  public ObjectInspector init(final Mode mode, final ObjectInspector[] parameters) throws HiveException {
    super.init(mode, parameters);
    this.inputObjectInspector = (PrimitiveObjectInspector) parameters[0];

    // Parameters:
    // In PARTIAL1 and COMPLETE mode, the parameters are original data.
    // In PARTIAL2 and FINAL mode, the parameters are partial aggregations.
    if (mode == Mode.PARTIAL1 || mode == Mode.COMPLETE) {
      if (parameters.length > 1) {
        this.kObjectInspector = (PrimitiveObjectInspector) parameters[1];
      }
    }

    return PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.BINARY);
  }
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