001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.regionserver; 019 020import org.apache.hadoop.hbase.client.RegionInfo; 021import org.apache.yetus.audience.InterfaceAudience; 022import org.apache.yetus.audience.InterfaceStability; 023 024/** 025 * A more restricted interface for HStore. Only gives the caller access to information about store 026 * configuration/settings that cannot easily be obtained from XML config object. Example user would 027 * be CompactionPolicy that doesn't need entire (H)Store, only this. Add things here as needed. 028 */ 029@InterfaceAudience.Private 030@InterfaceStability.Unstable 031public interface StoreConfigInformation { 032 /** Returns Gets the Memstore flush size for the region that this store works with. */ 033 // TODO: Why is this in here? It should be in Store and it should return the Store flush size, 034 // not the Regions. St.Ack 035 long getMemStoreFlushSize(); 036 037 /** Returns Gets the cf-specific time-to-live for store files. */ 038 long getStoreFileTtl(); 039 040 /** 041 * @return Gets the cf-specific compaction check frequency multiplier. The need for compaction 042 * (outside of normal checks during flush, open, etc.) will be ascertained every 043 * multiplier * HConstants.THREAD_WAKE_FREQUENCY milliseconds. 044 */ 045 long getCompactionCheckMultiplier(); 046 047 /** 048 * The number of files required before flushes for this store will be blocked. 049 */ 050 long getBlockingFileCount(); 051 052 RegionInfo getRegionInfo(); 053 054 String getColumnFamilyName(); 055}