| /** |
| * 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.hdfs.server.federation.resolver.order; |
| |
| /** |
| * Order of the destinations when we have multiple of them. When the resolver |
| * of files to subclusters (FileSubclusterResolver) has multiple destinations, |
| * this determines which location should be checked first. |
| */ |
| public enum DestinationOrder { |
| HASH, // Follow consistent hashing in the first folder level |
| LOCAL, // Local first |
| RANDOM, // Random order |
| HASH_ALL, // Follow consistent hashing |
| SPACE // Available space based order |
| } |