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.regionserver;
20
21 import org.apache.hadoop.classification.InterfaceAudience;
22 import org.apache.hadoop.classification.InterfaceStability;
23
24 /**
25 * The class that contains shared information about various knobs of a Store/HStore object.
26 * Unlike the configuration objects that merely return the XML values, the implementations
27 * should return ready-to-use applicable values for corresponding calls, after all the
28 * parsing/validation/adjustment for other considerations, so that we don't have to repeat
29 * this logic in multiple places.
30 * TODO: move methods and logic here as necessary.
31 */
32 @InterfaceAudience.Private
33 @InterfaceStability.Unstable
34 public interface StoreConfiguration {
35 /**
36 * Gets the cf-specific major compaction period.
37 */
38 public Long getMajorCompactionPeriod();
39
40
41 /**
42 * Gets the Memstore flush size for the region that this store works with.
43 */
44 public long getMemstoreFlushSize();
45
46 /**
47 * Gets the cf-specific time-to-live for store files.
48 */
49 public long getStoreFileTtl();
50 }