hadoop RemoteIterator 源码
haddop RemoteIterator 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/RemoteIterator.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.hadoop.fs;
import java.io.IOException;
import java.util.NoSuchElementException;
/**
* An iterator over a collection whose elements need to be fetched remotely
*/
public interface RemoteIterator<E> {
/**
* Returns <tt>true</tt> if the iteration has more elements.
*
* @return <tt>true</tt> if the iterator has more elements.
* @throws IOException if any IO error occurs
*/
boolean hasNext() throws IOException;
/**
* Returns the next element in the iteration.
*
* @return the next element in the iteration.
* @throws NoSuchElementException iteration has no more elements.
* @throws IOException if any IO error occurs
*/
E next() throws IOException;
}
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