| /** |
| * 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. |
| */ |
| |
| package org.apache.hadoop.yarn.server.records; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.yarn.util.Records; |
| |
| /** |
| * The version information for state get stored in YARN components, |
| * i.e. RMState, NMState, etc., which include: majorVersion and |
| * minorVersion. |
| * The major version update means incompatible changes happen while |
| * minor version update indicates compatible changes. |
| */ |
| @LimitedPrivate({"YARN", "MapReduce"}) |
| @Unstable |
| public abstract class Version { |
| |
| public static Version newInstance(int majorVersion, int minorVersion) { |
| Version version = Records.newRecord(Version.class); |
| version.setMajorVersion(majorVersion); |
| version.setMinorVersion(minorVersion); |
| return version; |
| } |
| |
| public abstract int getMajorVersion(); |
| |
| public abstract void setMajorVersion(int majorVersion); |
| |
| public abstract int getMinorVersion(); |
| |
| public abstract void setMinorVersion(int minorVersion); |
| |
| public String toString() { |
| return getMajorVersion() + "." + getMinorVersion(); |
| } |
| |
| public boolean isCompatibleTo(Version version) { |
| return getMajorVersion() == version.getMajorVersion(); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + getMajorVersion(); |
| result = prime * result + getMinorVersion(); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| Version other = (Version) obj; |
| if (this.getMajorVersion() == other.getMajorVersion() |
| && this.getMinorVersion() == other.getMinorVersion()) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| } |