| /** |
| * 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.hbase.rsgroup; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.master.MasterServices; |
| import org.apache.hadoop.hbase.net.Address; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * Interface used to manage RSGroupInfo storage. An implementation has the option to support offline |
| * mode. See {@code RSGroupBasedLoadBalancer}. |
| */ |
| @InterfaceAudience.Private |
| public interface RSGroupInfoManager { |
| |
| void start(); |
| |
| /** |
| * Add given RSGroupInfo to existing list of group infos. |
| */ |
| void addRSGroup(RSGroupInfo rsGroupInfo) throws IOException; |
| |
| /** |
| * Remove a region server group. |
| */ |
| void removeRSGroup(String groupName) throws IOException; |
| |
| /** |
| * Move servers to a new group. |
| */ |
| void moveServers(Set<Address> servers, String targetGroupName) throws IOException; |
| |
| /** |
| * Gets the group info of server. |
| */ |
| RSGroupInfo getRSGroupOfServer(Address serverHostPort) throws IOException; |
| |
| /** |
| * Gets {@code RSGroupInfo} for the given group name. |
| */ |
| RSGroupInfo getRSGroup(String groupName) throws IOException; |
| |
| /** |
| * List the existing {@code RSGroupInfo}s. |
| */ |
| List<RSGroupInfo> listRSGroups() throws IOException; |
| |
| /** |
| * Whether the manager is able to fully return group metadata |
| * @return whether the manager is in online mode |
| */ |
| boolean isOnline(); |
| |
| /** |
| * Remove decommissioned servers from rsgroup |
| * @param servers set of servers to remove |
| */ |
| void removeServers(Set<Address> servers) throws IOException; |
| |
| /** |
| * Get {@code RSGroupInfo} for the given table. |
| */ |
| RSGroupInfo getRSGroupForTable(TableName tableName) throws IOException; |
| |
| static RSGroupInfoManager create(MasterServices master) throws IOException { |
| if (RSGroupUtil.isRSGroupEnabled(master.getConfiguration())) { |
| return RSGroupInfoManagerImpl.getInstance(master); |
| } else { |
| return new DisabledRSGroupInfoManager(master.getServerManager()); |
| } |
| } |
| |
| /** |
| * Balance a region server group. |
| */ |
| boolean balanceRSGroup(String groupName) throws IOException; |
| |
| /** |
| * Set group for tables. |
| */ |
| void setRSGroup(Set<TableName> tables, String groupName) throws IOException; |
| |
| /** |
| * Determine {@code RSGroupInfo} for the given table. |
| * @param tableName table name |
| * @return rsgroup name |
| */ |
| String determineRSGroupInfoForTable(TableName tableName); |
| |
| /** |
| * Rename rsgroup |
| * @param oldName old rsgroup name |
| * @param newName new rsgroup name |
| * @throws IOException |
| */ |
| void renameRSGroup(String oldName, String newName) throws IOException; |
| |
| /** |
| * Update RSGroup configuration |
| * @param groupName the group name |
| * @param configuration new configuration of the group name to be set |
| * @throws IOException if a remote or network exception occurs |
| */ |
| void updateRSGroupConfig(String groupName, Map<String, String> configuration) throws IOException; |
| |
| } |