| /** |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.master.handler; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.hbase.HRegionInfo; |
| import org.apache.hadoop.hbase.HTableDescriptor; |
| import org.apache.hadoop.hbase.InvalidFamilyOperationException; |
| import org.apache.hadoop.hbase.Server; |
| import org.apache.hadoop.hbase.catalog.MetaEditor; |
| import org.apache.hadoop.hbase.master.MasterFileSystem; |
| import org.apache.hadoop.hbase.master.MasterServices; |
| import org.apache.hadoop.hbase.util.Bytes; |
| |
| /** |
| * Handles adding a new family to an existing table. |
| */ |
| public class TableDeleteFamilyHandler extends TableEventHandler { |
| |
| private final byte [] familyName; |
| |
| public TableDeleteFamilyHandler(byte[] tableName, byte [] familyName, |
| Server server, final MasterServices masterServices) throws IOException { |
| super(EventType.C_M_ADD_FAMILY, tableName, server, masterServices); |
| this.familyName = familyName; |
| } |
| |
| @Override |
| protected void handleTableOperation(List<HRegionInfo> hris) throws IOException { |
| HTableDescriptor htd = hris.get(0).getTableDesc(); |
| if(!htd.hasFamily(familyName)) { |
| throw new InvalidFamilyOperationException( |
| "Family '" + Bytes.toString(familyName) + "' does not exist so " + |
| "cannot be deleted"); |
| } |
| for (HRegionInfo hri : hris) { |
| // Update the HTD |
| hri.getTableDesc().removeFamily(familyName); |
| // Update region in META |
| MetaEditor.updateRegionInfo(this.server.getCatalogTracker(), hri); |
| MasterFileSystem mfs = this.masterServices.getMasterFileSystem(); |
| // Update region info in FS |
| mfs.updateRegionInfo(hri); |
| // Delete directory in FS |
| mfs.deleteFamily(hri, familyName); |
| // Update region info in FS |
| this.masterServices.getMasterFileSystem().updateRegionInfo(hri); |
| } |
| } |
| } |