hbase-server/src/main/java/org/apache/hadoop/hbase/CoordinatedStateManager.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase;
  19
  20 import org.apache.hadoop.hbase.coordination.SplitLogManagerCoordination;
  21 import org.apache.hadoop.hbase.coordination.SplitLogWorkerCoordination;
  22 import org.apache.yetus.audience.InterfaceAudience;
  23
  24 /**
  25  * Implementations of this interface will keep and return to clients
  26  * implementations of classes providing API to execute
  27  * coordinated operations. This interface is client-side, so it does NOT
  28  * include methods to retrieve the particular interface implementations.
  29  *
  30  * For each coarse-grained area of operations there will be a separate
  31  * interface with implementation, providing API for relevant operations
  32  * requiring coordination.
  33  */
  34 @InterfaceAudience.Private
  35 public interface CoordinatedStateManager {
  36   /**
  37    * Method to retrieve coordination for split log worker
  38    */
  39   SplitLogWorkerCoordination getSplitLogWorkerCoordination();
  40
  41   /**
  42    * Method to retrieve coordination for split log manager
  43    */
  44   SplitLogManagerCoordination getSplitLogManagerCoordination();
  45 }