1 /**
2 * Copyright 2011 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 package org.apache.hadoop.hbase.master;
21
22 import java.util.concurrent.Callable;
23
24 import org.apache.hadoop.hbase.HRegionInfo;
25
26 /**
27 * A callable object that invokes the corresponding action that needs to be
28 * taken for unassignment of a region in transition. Implementing as future
29 * callable we are able to act on the timeout asynchronously.
30 */
31 public class UnAssignCallable implements Callable<Object> {
32 private AssignmentManager assignmentManager;
33
34 private HRegionInfo hri;
35
36 public UnAssignCallable(AssignmentManager assignmentManager, HRegionInfo hri) {
37 this.assignmentManager = assignmentManager;
38 this.hri = hri;
39 }
40
41 @Override
42 public Object call() throws Exception {
43 assignmentManager.unassign(hri, true);
44 return null;
45 }
46 }