org.apache.flink.runtime.state.gemini.engine.filecompaction.FileCompaction Maven / Gradle / Ivy
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*
* * 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,
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* * See the License for the specific language governing permissions and
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*/
package org.apache.flink.runtime.state.gemini.engine.filecompaction;
import java.io.Closeable;
/**
* Interface for file compaction. If the space amplification of DB
* reach the specified threshold, a compaction will be triggered to
* reduce the amplification. Note only those files used by DB runtime
* are considered.
*/
public interface FileCompaction extends Closeable {
/**
* Starts the file compaction.
*/
void start();
}