| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| VerboseByteStructMessageWrite |
|
| 1.5;1.5 |
| 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.utils; | |
| 20 | ||
| 21 | import java.io.DataOutput; | |
| 22 | import java.io.IOException; | |
| 23 | ||
| 24 | import org.apache.hadoop.io.Writable; | |
| 25 | import org.apache.hadoop.io.WritableComparable; | |
| 26 | ||
| 27 | /** Verbose Error mesage for ByteArray based messages */ | |
| 28 | public class VerboseByteStructMessageWrite { | |
| 29 | /** | |
| 30 | * Private Constructor | |
| 31 | */ | |
| 32 | 0 | private VerboseByteStructMessageWrite() { |
| 33 | 0 | } |
| 34 | ||
| 35 | /** | |
| 36 | * verboseWriteCurrentMessage | |
| 37 | * de-serialize, then write messages | |
| 38 | * | |
| 39 | * @param iterator iterator | |
| 40 | * @param out DataOutput | |
| 41 | * @param <I> vertexId | |
| 42 | * @param <M> message | |
| 43 | * @throws IOException | |
| 44 | * @throws RuntimeException | |
| 45 | */ | |
| 46 | public static <I extends WritableComparable, M extends Writable> | |
| 47 | void verboseWriteCurrentMessage( | |
| 48 | VertexIdMessageIterator<I, M> iterator, | |
| 49 | DataOutput out | |
| 50 | ) throws IOException { | |
| 51 | 0 | verboseWriteCurrentMessage( |
| 52 | 0 | iterator.getCurrentVertexId(), iterator.getCurrentMessage(), out); |
| 53 | 0 | } |
| 54 | ||
| 55 | /** | |
| 56 | * verboseWriteCurrentMessage | |
| 57 | * de-serialize, then write messages | |
| 58 | * | |
| 59 | * @param vertexId vertexId | |
| 60 | * @param message message | |
| 61 | * @param out DataOutput | |
| 62 | * @param <I> vertexId | |
| 63 | * @param <M> message | |
| 64 | * @throws IOException | |
| 65 | * @throws RuntimeException | |
| 66 | */ | |
| 67 | public static <I extends WritableComparable, M extends Writable> | |
| 68 | void verboseWriteCurrentMessage( | |
| 69 | I vertexId, | |
| 70 | M message, | |
| 71 | DataOutput out | |
| 72 | ) throws IOException { | |
| 73 | try { | |
| 74 | 0 | message.write(out); |
| 75 | 0 | } catch (NegativeArraySizeException e) { |
| 76 | 0 | handleNegativeArraySize(vertexId); |
| 77 | 0 | } |
| 78 | 0 | } |
| 79 | ||
| 80 | /** | |
| 81 | * message to present on NegativeArraySizeException | |
| 82 | * | |
| 83 | * @param vertexId vertexId | |
| 84 | * @param <I> vertexId type | |
| 85 | */ | |
| 86 | public static <I extends WritableComparable> | |
| 87 | void handleNegativeArraySize(I vertexId) { | |
| 88 | 0 | throw new RuntimeException("The number of bytes sent to vertex " + |
| 89 | vertexId + " exceeded the max capacity of its buffer. Please consider" + | |
| 90 | " setting giraph.useBigDataIOForMessages to true. You can do" + | |
| 91 | " this by adding the following option to your command line:" + | |
| 92 | " -Dgiraph.useBigDataIOForMessages=true." + | |
| 93 | " If there are super-vertices in the graph that receive many messages," + | |
| 94 | " setting this option will remove that limit"); | |
| 95 | } | |
| 96 | } |