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 assignment of a region in transition.
29 * Implementing as future callable we are able to act on the timeout
30 * asynchronously.
31 */
32 public class AssignCallable implements Callable<Object> {
33 private AssignmentManager assignmentManager;
34
35 private HRegionInfo hri;
36
37 public AssignCallable(AssignmentManager assignmentManager, HRegionInfo hri) {
38 this.assignmentManager = assignmentManager;
39 this.hri = hri;
40 }
41
42 @Override
43 public Object call() throws Exception {
44 assignmentManager.assign(hri, true, true, true);
45 return null;
46 }
47 }