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.hadoop.hbase.procedure2.LockStatus;
022import org.apache.hadoop.hbase.procedure2.Procedure;
023import org.apache.yetus.audience.InterfaceAudience;
024
025/**
026 * @deprecated only used for {@link RecoverMetaProcedure}. Should be removed along with
027 *             {@link RecoverMetaProcedure}.
028 */
029@Deprecated
030@InterfaceAudience.Private
031class MetaQueue extends Queue<TableName> {
032
033  protected MetaQueue(LockStatus lockStatus) {
034    super(TableName.META_TABLE_NAME, 1, lockStatus);
035  }
036
037  @Override
038  boolean requireExclusiveLock(Procedure<?> proc) {
039    return true;
040  }
041}