/*
 * 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.spark.network.shuffledb;

import java.io.Closeable;
import java.util.Iterator;
import java.util.Map;

import org.apache.spark.annotation.Private;

@Private
public interface DBIterator extends Iterator<Map.Entry<byte[], byte[]>>, Closeable {

    /**
     * Position at the first entry in the source whose `key` is at target.
     */
    void seek(byte[] key);

    default void remove() {
        throw new UnsupportedOperationException();
    }

}
