1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase.master;
20
21 import java.util.concurrent.Callable;
22
23 import org.apache.hadoop.hbase.classification.InterfaceAudience;
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 @InterfaceAudience.Private
33 public class AssignCallable implements Callable<Object> {
34 private AssignmentManager assignmentManager;
35
36 private HRegionInfo hri;
37 private boolean newPlan;
38
39 public AssignCallable(
40 AssignmentManager assignmentManager, HRegionInfo hri, boolean newPlan) {
41 this.assignmentManager = assignmentManager;
42 this.newPlan = newPlan;
43 this.hri = hri;
44 }
45
46 @Override
47 public Object call() throws Exception {
48 assignmentManager.assign(hri, true, newPlan);
49 return null;
50 }
51 }