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.util;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22
23 /**
24 * Similar interface as {@link org.apache.hadoop.util.Progressable} but returns
25 * a boolean to support canceling the operation.
26 * <p>
27 * Used for doing updating of OPENING znode during log replay on region open.
28 */
29 @InterfaceAudience.Private
30 public interface CancelableProgressable {
31
32 /**
33 * Report progress. Returns true if operations should continue, false if the
34 * operation should be canceled and rolled back.
35 * @return whether to continue (true) or cancel (false) the operation
36 */
37 boolean progress();
38
39 }