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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * 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 and
16   * limitations under the License.
17   */
18  
19  package org.apache.giraph.io.formats;
20  
21  import org.apache.giraph.bsp.BspInputSplit;
22  import org.apache.hadoop.mapreduce.InputSplit;
23  
24  import java.io.IOException;
25  import java.util.ArrayList;
26  import java.util.List;
27  
28  /**
29   * Utility methods for PseudoRandom input formats
30   */
31  public class PseudoRandomUtils {
32    /** Do not instantiate */
33    private PseudoRandomUtils() { }
34  
35    /**
36     * Create desired number of {@link BspInputSplit}s
37     *
38     * @param numSplits How many splits to create
39     * @return List of {@link BspInputSplit}s
40     */
41    public static List<InputSplit> getSplits(int numSplits) throws IOException,
42        InterruptedException {
43      List<InputSplit> inputSplitList = new ArrayList<InputSplit>();
44      for (int i = 0; i < numSplits; ++i) {
45        inputSplitList.add(new BspInputSplit(i, numSplits));
46      }
47      return inputSplitList;
48    }
49  }