flink-runtime/src/main/java/org/apache/flink/runtime/state/OperatorStateBackend.java

/*
 * 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;

import org.apache.flink.api.common.state.OperatorStateStore;
import org.apache.flink.util.Disposable;

import java.io.Closeable;

/**
 * Interface that combines both, the user facing {@link OperatorStateStore} interface and the system
 * interface {@link Snapshotable}
 */
public interface OperatorStateBackend
        extends OperatorStateStore,
                Snapshotable<SnapshotResult<OperatorStateHandle>>,
                Closeable,
                Disposable {

    @Override
    void dispose();
}