001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.master.procedure; 019 020import org.apache.hadoop.hbase.TableName; 021import org.apache.yetus.audience.InterfaceAudience; 022 023/** 024 * Procedures that operates on a specific Table (e.g. create, delete, snapshot, ...) must implement 025 * this interface to allow the system handle the lock/concurrency problems. 026 */ 027@InterfaceAudience.Private 028public interface TableProcedureInterface { 029 030 /** 031 * Used for acquire/release lock for namespace related operations, just a place holder as we do 032 * not have namespace table any more. 033 */ 034 public static final TableName DUMMY_NAMESPACE_TABLE_NAME = TableName.NAMESPACE_TABLE_NAME; 035 036 public enum TableOperationType { 037 CREATE, 038 DELETE, 039 DISABLE, 040 EDIT, 041 ENABLE, 042 READ, 043 SNAPSHOT, 044 REGION_SNAPSHOT, 045 FLUSH, 046 REGION_EDIT, 047 REGION_SPLIT, 048 REGION_MERGE, 049 REGION_ASSIGN, 050 REGION_UNASSIGN, 051 REGION_GC, 052 MERGED_REGIONS_GC/* region operations */, 053 REGION_TRUNCATE 054 } 055 056 /** Returns the name of the table the procedure is operating on */ 057 TableName getTableName(); 058 059 /** 060 * Given an operation type we can take decisions about what to do with pending operations. e.g. if 061 * we get a delete and we have some table operation pending (e.g. add column) we can abort those 062 * operations. 063 * @return the operation type that the procedure is executing. 064 */ 065 TableOperationType getTableOperationType(); 066}