1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.hadoop.classification; 19 20 import java.lang.annotation.Documented; 21 22 /** 23 * Annotation to inform users of how much to rely on a particular package, 24 * class or method not changing over time. 25 */ 26 @InterfaceAudience.Public 27 @InterfaceStability.Evolving 28 public class InterfaceStability { 29 /** 30 * Can evolve while retaining compatibility for minor release boundaries.; 31 * can break compatibility only at major release (ie. at m.0). 32 */ 33 @Documented 34 public @interface Stable {}; 35 36 /** 37 * Evolving, but can break compatibility at minor release (i.e. m.x) 38 */ 39 @Documented 40 public @interface Evolving {}; 41 42 /** 43 * No guarantee is provided as to reliability or stability across any 44 * level of release granularity. 45 */ 46 @Documented 47 public @interface Unstable {}; 48 } 49