content: /**
   *
   * 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 com.alibaba.wasp.master;
  
  import com.alibaba.wasp.Server;
  import org.apache.hadoop.hbase.Chore;
  
  /**
   * A janitor for the catalog tables. Scans the <code>.FMETA.</code> catalog
   * table on a period looking for unused entityGroups to garbage collect.
   */
  class CatalogJanitor extends Chore {
  
    CatalogJanitor(final Server server, final FMasterServices services) {
      super(server.getServerName() + "-CatalogJanitor", server.getConfiguration()
          .getInt("wasp.catalogjanitor.interval", 300000), server);
    }
  
    public void interrupt() {
    }
  
    @Override
    protected void chore() {
    }
  }