/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.regionserver;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A more restricted interface for HStore. Only gives the caller access to information
* about store configuration/settings that cannot easily be obtained from XML config object.
* Example user would be CompactionPolicy that doesn't need entire (H)Store, only this.
* Add things here as needed.
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public interface StoreConfigInformation {
/**
* @return Gets the Memstore flush size for the region that this store works with.
*/
// TODO: Why is this in here? It should be in Store and it should return the Store flush size,
// not the Regions. St.Ack
long getMemstoreFlushSize();
/**
* @return Gets the cf-specific time-to-live for store files.
*/
long getStoreFileTtl();
/**
* @return Gets the cf-specific compaction check frequency multiplier.
* The need for compaction (outside of normal checks during flush, open, etc.) will
* be ascertained every multiplier * HConstants.THREAD_WAKE_FREQUENCY milliseconds.
*/
long getCompactionCheckMultiplier();
/**
* The number of files required before flushes for this store will be blocked.
*/
long getBlockingFileCount();
}