1/*2 * Licensed to the Apache Software Foundation (ASF) under one3 * or more contributor license agreements. See the NOTICE file4 * distributed with this work for additional information5 * regarding copyright ownership. The ASF licenses this file6 * to you under the Apache License, Version 2.0 (the7 * "License"); you may not use this file except in compliance8 * with the License. You may obtain a copy of the License at9 *10 * http://www.apache.org/licenses/LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing, software13 * distributed under the License is distributed on an "AS IS" BASIS,14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.15 * See the License for the specific language governing permissions and16 * limitations under the License.17 */1819package org.apache.giraph.io.formats;
2021import org.apache.hadoop.fs.Path;
22import org.apache.hadoop.io.LongWritable;
23import org.apache.hadoop.io.Text;
24import org.apache.hadoop.io.compress.CompressionCodec;
25import org.apache.hadoop.io.compress.CompressionCodecFactory;
26import org.apache.hadoop.mapreduce.InputSplit;
27import org.apache.hadoop.mapreduce.JobContext;
28import org.apache.hadoop.mapreduce.RecordReader;
29import org.apache.hadoop.mapreduce.TaskAttemptContext;
30import org.apache.hadoop.mapreduce.lib.input.LineRecordReader;
3132/**33 * Provides functionality similar to34 * {@link org.apache.hadoop.mapreduce.lib.input.TextInputFormat},35 * but allows for different data sources (vertex and edge data).36 */37publicclassGiraphTextInputFormat38extends GiraphFileInputFormat<LongWritable, Text> {
39 @Override
40public RecordReader<LongWritable, Text>
41 createRecordReader(InputSplit split, TaskAttemptContext context) {
42returnnew LineRecordReader();
43 }
4445 @Override
46protectedboolean isSplitable(JobContext context, Path file) {
47 CompressionCodec codec =
48new CompressionCodecFactory(context.getConfiguration()).getCodec(file);
49return codec == null;
50 }
51 }