| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| BspInputSplit |
|
| 1.0;1 |
| 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.bsp; | |
| 20 | ||
| 21 | import java.io.DataInput; | |
| 22 | import java.io.DataOutput; | |
| 23 | import java.io.IOException; | |
| 24 | ||
| 25 | import org.apache.hadoop.io.Writable; | |
| 26 | import org.apache.hadoop.mapreduce.InputSplit; | |
| 27 | ||
| 28 | /** | |
| 29 | * This InputSplit will not give any ordering or location data. | |
| 30 | * It is used internally by BspInputFormat (which determines | |
| 31 | * how many tasks to run the application on). Users should not use this | |
| 32 | * directly. | |
| 33 | */ | |
| 34 | public class BspInputSplit extends InputSplit implements Writable { | |
| 35 | /** Number of splits */ | |
| 36 | 0 | private int numSplits = -1; |
| 37 | /** Split index */ | |
| 38 | 0 | private int splitIndex = -1; |
| 39 | ||
| 40 | /** | |
| 41 | * Reflection constructor. | |
| 42 | */ | |
| 43 | 0 | public BspInputSplit() { } |
| 44 | ||
| 45 | /** | |
| 46 | * Constructor used by {@link BspInputFormat}. | |
| 47 | * | |
| 48 | * @param splitIndex Index of this split. | |
| 49 | * @param numSplits Total number of splits. | |
| 50 | */ | |
| 51 | 0 | public BspInputSplit(int splitIndex, int numSplits) { |
| 52 | 0 | this.splitIndex = splitIndex; |
| 53 | 0 | this.numSplits = numSplits; |
| 54 | 0 | } |
| 55 | ||
| 56 | @Override | |
| 57 | public long getLength() throws IOException, InterruptedException { | |
| 58 | 0 | return 0; |
| 59 | } | |
| 60 | ||
| 61 | @Override | |
| 62 | public String[] getLocations() throws IOException, InterruptedException { | |
| 63 | 0 | return new String[]{}; |
| 64 | } | |
| 65 | ||
| 66 | @Override | |
| 67 | public void readFields(DataInput in) throws IOException { | |
| 68 | 0 | splitIndex = in.readInt(); |
| 69 | 0 | numSplits = in.readInt(); |
| 70 | 0 | } |
| 71 | ||
| 72 | @Override | |
| 73 | public void write(DataOutput out) throws IOException { | |
| 74 | 0 | out.writeInt(splitIndex); |
| 75 | 0 | out.writeInt(numSplits); |
| 76 | 0 | } |
| 77 | ||
| 78 | /** | |
| 79 | * Get the index of this split. | |
| 80 | * | |
| 81 | * @return Index of this split. | |
| 82 | */ | |
| 83 | public int getSplitIndex() { | |
| 84 | 0 | return splitIndex; |
| 85 | } | |
| 86 | ||
| 87 | /** | |
| 88 | * Get the number of splits for this application. | |
| 89 | * | |
| 90 | * @return Total number of splits. | |
| 91 | */ | |
| 92 | public int getNumSplits() { | |
| 93 | 0 | return numSplits; |
| 94 | } | |
| 95 | ||
| 96 | @Override | |
| 97 | public String toString() { | |
| 98 | 0 | return "'" + getClass().getCanonicalName() + |
| 99 | 0 | ", index=" + getSplitIndex() + ", num=" + getNumSplits(); |
| 100 | } | |
| 101 | } |