| /* |
| * Copyright 2016, Yahoo! Inc. Licensed under the terms of the Apache License 2.0. See LICENSE file |
| * at the project root for terms. |
| */ |
| |
| /** |
| * Hive UDFs for Frequent Items sketch. |
| * This includes generic implementation in the form of abstract classes DataToItemsSketchUDAF |
| * and UnionItemsSketchUDAF to be specialized for particular types of items. |
| * An implementation for strings is provided: DataToStringsSketchUDAF and UnionStringsSketchUDAF. |
| * GetFrequentItemsFromStringsSketchUDTF is to obtain results from sketches. |
| * |
| * @author Alexander Saydakov |
| */ |
| package com.yahoo.sketches.hive.frequencies; |
