Examples with PointerCombiner com.baidu.hugegraph.computer.core.combiner.PointerCombiner used on opensource projects

Example 1 with PointerCombiner

use of com.baidu.hugegraph.computer.core.combiner.PointerCombiner in project hugegraph-computer by hugegraph.

the class SortManager method createSortFlusher.

private InnerSortFlusher createSortFlusher(MessageType type, RandomAccessOutput output, int flushThreshold) {
    PointerCombiner combiner;
    boolean needSortSubKv;
    switch(type) {
        case VERTEX:
            combiner = new VertexValueCombiner(this.context);
            needSortSubKv = false;
            break;
        case EDGE:
            combiner = new EdgeValueCombiner(this.context);
            needSortSubKv = true;
            break;
        case MSG:
            combiner = this.createMessageCombiner();
            needSortSubKv = false;
            break;
        default:
            throw new ComputerException("Unsupported combine message " + "type for %s", type);
    }
    InnerSortFlusher flusher;
    if (combiner == null) {
        flusher = new KvInnerSortFlusher(output);
    } else {
        if (needSortSubKv) {
            flusher = new CombineSubKvInnerSortFlusher(output, combiner, flushThreshold);
        } else {
            flusher = new CombineKvInnerSortFlusher(output, combiner);
        }
    }
    return flusher;
}

Example 2 with PointerCombiner

use of com.baidu.hugegraph.computer.core.combiner.PointerCombiner in project hugegraph-computer by hugegraph.

the class SortLargeDataTest method mergeFiles.

private static void mergeFiles(Sorter sorter, List<String> files, List<String> outputs) throws Exception {
    PointerCombiner combiner = SorterTestUtil.createPointerCombiner(IntValue::new, new IntValueSumCombiner());
    OuterSortFlusher flusher = new CombineKvOuterSortFlusher(combiner);
    sorter.mergeInputs(files, flusher, outputs, false);
}

Example 3 with PointerCombiner

use of com.baidu.hugegraph.computer.core.combiner.PointerCombiner in project hugegraph-computer by hugegraph.

the class SortLargeDataTest method sortBuffer.

private static RandomAccessInput sortBuffer(Sorter sorter, RandomAccessInput input) throws Exception {
    BytesOutput output = IOFactory.createBytesOutput(Constants.SMALL_BUF_SIZE);
    PointerCombiner combiner = SorterTestUtil.createPointerCombiner(IntValue::new, new IntValueSumCombiner());
    InnerSortFlusher flusher = new CombineKvInnerSortFlusher(output, combiner);
    sorter.sortBuffer(input, flusher, false);
    return EntriesUtil.inputFromOutput(output);
}

Example 4 with PointerCombiner

use of com.baidu.hugegraph.computer.core.combiner.PointerCombiner in project hugegraph-computer by hugegraph.

the class SorterTest method testSortKvBuffers.

@Test
public void testSortKvBuffers() throws Exception {
    Config config = UnitTestBase.updateWithRequiredOptions(ComputerOptions.HGKV_MAX_FILE_SIZE, "32", ComputerOptions.HGKV_DATABLOCK_SIZE, "16", ComputerOptions.HGKV_MERGE_FILES_NUM, "3", ComputerOptions.TRANSPORT_RECV_FILE_MODE, "false");
    List<Integer> map1 = ImmutableList.of(2, 3, 2, 1, 5, 2, 6, 9, 6, 2);
    List<Integer> map2 = ImmutableList.of(1, 3, 1, 1, 3, 2, 6, 9, 8, 2);
    String path = StoreTestUtil.availablePathById("1");
    // Merge 4 sorted input
    List<RandomAccessInput> inputs = ImmutableList.of(SorterTestUtil.inputFromKvMap(map1), SorterTestUtil.inputFromKvMap(map2), SorterTestUtil.inputFromKvMap(map1), SorterTestUtil.inputFromKvMap(map2));
    Sorter sorter = SorterTestUtil.createSorter(config);
    PointerCombiner combiner = SorterTestUtil.createPointerCombiner(IntValue::new, new IntValueSumCombiner());
    sorter.mergeBuffers(inputs, new CombineKvOuterSortFlusher(combiner), path, false);
    // Assert merge result from target hgkvDir
    KvEntryFileReader reader = new HgkvDirReaderImpl(path, false);
    EntryIterator iter = reader.iterator();
    SorterTestUtil.assertKvEntry(iter.next(), 1, 8);
    SorterTestUtil.assertKvEntry(iter.next(), 2, 8);
    SorterTestUtil.assertKvEntry(iter.next(), 3, 4);
    SorterTestUtil.assertKvEntry(iter.next(), 5, 4);
    SorterTestUtil.assertKvEntry(iter.next(), 6, 40);
    SorterTestUtil.assertKvEntry(iter.next(), 8, 4);
    Assert.assertFalse(iter.hasNext());
}

Example 5 with PointerCombiner

use of com.baidu.hugegraph.computer.core.combiner.PointerCombiner in project hugegraph-computer by hugegraph.

the class SorterTest method testMergeKvInputs.

private void testMergeKvInputs(Config config) throws Exception {
    List<Integer> map1 = ImmutableList.of(2, 3, 2, 1, 5, 2, 6, 9, 6, 2);
    List<Integer> map2 = ImmutableList.of(1, 3, 1, 2, 3, 2);
    // Input hgkvDirs
    String file1Name = StoreTestUtil.availablePathById("1");
    String file2Name = StoreTestUtil.availablePathById("2");
    String file3Name = StoreTestUtil.availablePathById("3");
    String file4Name = StoreTestUtil.availablePathById("4");
    String file5Name = StoreTestUtil.availablePathById("5");
    String file6Name = StoreTestUtil.availablePathById("6");
    String file7Name = StoreTestUtil.availablePathById("7");
    String file8Name = StoreTestUtil.availablePathById("8");
    String file9Name = StoreTestUtil.availablePathById("9");
    String file10Name = StoreTestUtil.availablePathById("10");
    List<String> inputs = Lists.newArrayList(file1Name, file2Name, file3Name, file4Name, file5Name, file6Name, file7Name, file8Name, file9Name, file10Name);
    // Output hgkvDirs
    String output1 = StoreTestUtil.availablePathById("20");
    String output2 = StoreTestUtil.availablePathById("21");
    List<String> outputs = ImmutableList.of(output1, output2);
    for (int i = 0; i < inputs.size(); i++) {
        List<Integer> map;
        if ((i & 1) == 0) {
            map = map1;
        } else {
            map = map2;
        }
        if (config.get(ComputerOptions.TRANSPORT_RECV_FILE_MODE)) {
            StoreTestUtil.bufferFileFromKvMap(map, inputs.get(i));
        } else {
            StoreTestUtil.hgkvDirFromKvMap(config, map, inputs.get(i));
        }
    }
    // Merge file
    Sorter sorter = SorterTestUtil.createSorter(config);
    PointerCombiner combiner = SorterTestUtil.createPointerCombiner(IntValue::new, new IntValueSumCombiner());
    sorter.mergeInputs(inputs, new CombineKvOuterSortFlusher(combiner), outputs, false);
    // Assert sort result
    List<Integer> result = ImmutableList.of(1, 25, 2, 20, 3, 10, 5, 10, 6, 55);
    Iterator<Integer> resultIter = result.iterator();
    Iterator<KvEntry> iterator = sorter.iterator(outputs, false);
    KvEntry last = iterator.next();
    int value = StoreTestUtil.dataFromPointer(last.value());
    while (true) {
        KvEntry current = null;
        if (iterator.hasNext()) {
            current = iterator.next();
            if (last.compareTo(current) == 0) {
                value += StoreTestUtil.dataFromPointer(current.value());
                continue;
            }
        }
        Assert.assertEquals(StoreTestUtil.dataFromPointer(last.key()), resultIter.next());
        Assert.assertEquals(value, resultIter.next());
        if (current == null) {
            break;
        }
        last = current;
        value = StoreTestUtil.dataFromPointer(last.value());
    }
    Assert.assertFalse(resultIter.hasNext());
    FileUtil.deleteFilesQuietly(inputs);
    FileUtil.deleteFilesQuietly(outputs);
}