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.procedure2;
019
020import java.util.concurrent.Callable;
021import org.apache.hadoop.hbase.executor.EventType;
022import org.apache.hadoop.hbase.regionserver.HRegionServer;
023import org.apache.yetus.audience.InterfaceAudience;
024
025/**
026 * A general interface for a sub procedure runs at RS side.
027 */
028@InterfaceAudience.Private
029public interface RSProcedureCallable extends Callable<Void> {
030
031  /**
032   * Initialize the callable
033   * @param parameter the parameter passed from master.
034   * @param rs        the regionserver instance
035   */
036  void init(byte[] parameter, HRegionServer rs);
037
038  /**
039   * Event type used to select thread pool.
040   */
041  EventType getEventType();
042}