org.apache.flink.runtime.state.gemini.engine.filter.StateFilter Maven / Gradle / Ivy
/*
* 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.flink.runtime.state.gemini.engine.filter;
import org.apache.flink.runtime.state.gemini.engine.GRegionContext;
/**
* Filter state when accessing and compacting state.
* NOTE: we assume that if new version data should be filtered, then the old version
* data should also be filtered.
*/
public interface StateFilter {
/**
* Whether to filter a state with the gRegionContext and seqID.
*
* @return true if the state should be filtered.
*/
boolean filter(GRegionContext gRegionContext, long seqID);
}