| /** |
| * 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. |
| */ |
| /** |
| * Library of arithmetic operators. |
| * <br> |
| * Most of the arithmetic operators come in three types based on their schema. |
| * The operators whose names ends with "Map" (eg SumMap, MaxMap, MinMap) take in Map on input ports and emit HashMap. These operators use |
| * round robin partitioning and would merge as per their functionality. |
| * <br> |
| * The operators whose names ends with "KeyVal" (eg SumKeyVal, MaxKeyVal, MinKeyVal) take in KeyValPair and emit KeyValPair. These operators use |
| * sticky key partitioning and would merge using default pass through merge operator. |
| * <br> |
| * The operators whose names are just their function name (eg Sum, Min, Max) operate on same objects and emit a final result. These operators have no keys. |
| * They partition in roundrobin and would merge as per their functionality. |
| * <br> |
| * Average, Quotient operators are non-partitionable. |
| * <br> |
| * <br> |
| */ |
| @org.apache.hadoop.classification.InterfaceStability.Evolving |
| package com.datatorrent.lib.math; |
