InputSplit.java
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上传日期:2018-01-08
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文件大小:2k
- /*
- * 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.mapred;
- import java.io.IOException;
- import org.apache.hadoop.io.Writable;
- /**
- * <code>InputSplit</code> represents the data to be processed by an
- * individual {@link Mapper}.
- *
- * <p>Typically, it presents a byte-oriented view on the input and is the
- * responsibility of {@link RecordReader} of the job to process this and present
- * a record-oriented view.
- *
- * @see InputFormat
- * @see RecordReader
- * @deprecated Use {@link org.apache.hadoop.mapreduce.InputSplit} instead.
- */
- @Deprecated
- public interface InputSplit extends Writable {
- /**
- * Get the total number of bytes in the data of the <code>InputSplit</code>.
- *
- * @return the number of bytes in the input split.
- * @throws IOException
- */
- long getLength() throws IOException;
-
- /**
- * Get the list of hostnames where the input split is located.
- *
- * @return list of hostnames where data of the <code>InputSplit</code> is
- * located as an array of <code>String</code>s.
- * @throws IOException
- */
- String[] getLocations() throws IOException;
- }