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Apache Hive adaptors for the DataSketches library.

There is a newer version: 2.0.0

/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ /** * Hive UDFs for Quantiles sketches. * This includes UDFs for generic ItemsSketch and specialized DoublesSketch. * * The generic implementation is in the form of abstract classes DataToItemsSketchUDAF and * UnionItemsSketchUDAF to be specialized for particular types of items. * An implementation for strings is provided: DataToStringsSketchUDAF, UnionStringsSketchUDAF, * plus UDFs to obtain the results from sketches: * GetQuantileFromStringsSketchUDF, GetQuantilesFromStringsSketchUDF and GetPmfFromStringsSketchUDF. * *

Support for DoublesSketch: DataToDoublesSketchUDAF, UnionDoublesSketchUDAF, * GetQuantileFromDoublesSketchUDF, GetQuantilesFromDoublesSketchUDF, GetPmfFromDoublesSketchUDF * * @author Alexander Saydakov */ package org.apache.datasketches.hive.quantiles;