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