Examples with KvOuterSortFlusher com.baidu.hugegraph.computer.core.sort.flusher.KvOuterSortFlusher used on opensource projects

Example 1 with KvOuterSortFlusher

use of com.baidu.hugegraph.computer.core.sort.flusher.KvOuterSortFlusher in project hugegraph-computer by hugegraph.

the class SortLargeDataTest method testMergeBuffers.

@Test
public void testMergeBuffers() throws Exception {
    StopWatch watcher = new StopWatch();
    // Sort buffers total size 100M, each buffer is 50KB
    final long bufferSize = Bytes.KB * 50;
    final long bufferNum = 2000;
    final int keyRange = 10000000;
    long totalValue = 0L;
    Random random = new Random();
    List<RandomAccessInput> buffers = new ArrayList<>();
    for (int i = 0; i < bufferNum; i++) {
        BytesOutput buffer = IOFactory.createBytesOutput(Constants.SMALL_BUF_SIZE);
        while (buffer.position() < bufferSize) {
            // Write data
            int key = random.nextInt(keyRange);
            SorterTestUtil.writeData(buffer, key);
            int value = random.nextInt(100);
            SorterTestUtil.writeData(buffer, value);
            totalValue += value;
        }
        buffers.add(EntriesUtil.inputFromOutput(buffer));
    }
    // Sort buffer
    Sorter sorter = SorterTestUtil.createSorter(CONFIG);
    watcher.start();
    List<RandomAccessInput> sortedBuffers = new ArrayList<>();
    for (RandomAccessInput buffer : buffers) {
        RandomAccessInput sortedBuffer = sortBuffer(sorter, buffer);
        sortedBuffers.add(sortedBuffer);
    }
    watcher.stop();
    LOG.info("testMergeBuffers sort buffer cost time: {}", watcher.getTime());
    String resultFile = StoreTestUtil.availablePathById("0");
    // Sort buffers
    watcher.reset();
    watcher.start();
    sorter.mergeBuffers(sortedBuffers, new KvOuterSortFlusher(), resultFile, false);
    watcher.stop();
    LOG.info("testMergeBuffers merge buffers cost time: {}", watcher.getTime());
    // Assert result
    long result = sumOfEntryValue(sorter, ImmutableList.of(resultFile));
    Assert.assertEquals(totalValue, result);
    assertFileOrder(sorter, ImmutableList.of(resultFile));
}

Example 2 with KvOuterSortFlusher

use of com.baidu.hugegraph.computer.core.sort.flusher.KvOuterSortFlusher in project hugegraph-computer by hugegraph.

the class FlusherTest method testKvOuterSortFlusher.

@Test
public void testKvOuterSortFlusher() throws Exception {
    List<Integer> map1 = ImmutableList.of(2, 1, 2, 1, 3, 1, 4, 1);
    List<Integer> map2 = ImmutableList.of(1, 1, 3, 1, 6, 1);
    BytesInput input1 = SorterTestUtil.inputFromKvMap(map1);
    BytesInput input2 = SorterTestUtil.inputFromKvMap(map2);
    List<RandomAccessInput> inputs = ImmutableList.of(input1, input2);
    String resultFile = StoreTestUtil.availablePathById("1");
    Sorter sorter = SorterTestUtil.createSorter(CONFIG);
    sorter.mergeBuffers(inputs, new KvOuterSortFlusher(), resultFile, false);
    ImmutableList<String> outputs = ImmutableList.of(resultFile);
    Iterator<KvEntry> iter = sorter.iterator(outputs, false);
    SorterTestUtil.assertKvEntry(iter.next(), 1, 1);
    SorterTestUtil.assertKvEntry(iter.next(), 2, 1);
    SorterTestUtil.assertKvEntry(iter.next(), 2, 1);
    SorterTestUtil.assertKvEntry(iter.next(), 3, 1);
    SorterTestUtil.assertKvEntry(iter.next(), 3, 1);
    SorterTestUtil.assertKvEntry(iter.next(), 4, 1);
    SorterTestUtil.assertKvEntry(iter.next(), 6, 1);
}

Example 3 with KvOuterSortFlusher

use of com.baidu.hugegraph.computer.core.sort.flusher.KvOuterSortFlusher in project hugegraph-computer by hugegraph.

the class SortLargeDataTest method testDiffNumEntriesFileMerge.

@Test
public void testDiffNumEntriesFileMerge() throws Exception {
    Config config = UnitTestBase.updateWithRequiredOptions(ComputerOptions.HGKV_MERGE_FILES_NUM, "3", ComputerOptions.TRANSPORT_RECV_FILE_MODE, "false");
    List<Integer> sizeList = ImmutableList.of(200, 500, 20, 50, 300, 250, 10, 33, 900, 89, 20);
    List<String> inputs = new ArrayList<>();
    for (int j = 0; j < sizeList.size(); j++) {
        String file = StoreTestUtil.availablePathById(j + 10);
        inputs.add(file);
        try (KvEntryFileWriter builder = new HgkvDirBuilderImpl(config, file)) {
            for (int i = 0; i < sizeList.get(j); i++) {
                byte[] keyBytes = StoreTestUtil.intToByteArray(i);
                byte[] valueBytes = StoreTestUtil.intToByteArray(1);
                Pointer key = new InlinePointer(keyBytes);
                Pointer value = new InlinePointer(valueBytes);
                KvEntry entry = new DefaultKvEntry(key, value);
                builder.write(entry);
            }
        }
    }
    List<String> outputs = ImmutableList.of(StoreTestUtil.availablePathById(0), StoreTestUtil.availablePathById(1), StoreTestUtil.availablePathById(2), StoreTestUtil.availablePathById(3));
    Sorter sorter = SorterTestUtil.createSorter(config);
    sorter.mergeInputs(inputs, new KvOuterSortFlusher(), outputs, false);
    int total = sizeList.stream().mapToInt(i -> i).sum();
    int mergeTotal = 0;
    for (String output : outputs) {
        mergeTotal += HgkvDirImpl.open(output).numEntries();
    }
    Assert.assertEquals(total, mergeTotal);
}