Examples with KvEntryFileWriter com.baidu.hugegraph.computer.core.store.KvEntryFileWriter used on opensource projects

Example 1 with KvEntryFileWriter

use of com.baidu.hugegraph.computer.core.store.KvEntryFileWriter in project hugegraph-computer by hugegraph.

the class HgkvFileSorter method mergeInputs.

@Override
public void mergeInputs(List<String> inputs, OuterSortFlusher flusher, List<String> outputs, boolean withSubKv) throws Exception {
    Function<String, EntryIterator> fileToInput;
    Function<String, KvEntryFileWriter> fileToWriter;
    if (withSubKv) {
        fileToInput = o -> new HgkvDir4SubKvReaderImpl(o).iterator();
    } else {
        fileToInput = o -> new HgkvDirReaderImpl(o).iterator();
    }
    fileToWriter = path -> new HgkvDirBuilderImpl(this.config, path);
    InputFilesSelector selector = new DisperseEvenlySelector();
    List<SelectedFiles> selectResult = selector.selectedByHgkvFile(inputs, outputs);
    this.sorter.mergeFile(selectResult, fileToInput, fileToWriter, flusher);
}

Example 2 with KvEntryFileWriter

use of com.baidu.hugegraph.computer.core.store.KvEntryFileWriter in project hugegraph-computer by hugegraph.

the class BufferFileSorter method mergeInputs.

@Override
public void mergeInputs(List<String> inputs, OuterSortFlusher flusher, List<String> outputs, boolean withSubKv) throws Exception {
    Function<String, EntryIterator> fileToInput;
    Function<String, KvEntryFileWriter> fileToWriter;
    if (withSubKv) {
        fileToInput = o -> new BufferFileSubEntryReader(o).iterator();
    } else {
        fileToInput = o -> new BufferFileEntryReader(o).iterator();
    }
    fileToWriter = BufferFileEntryBuilder::new;
    InputFilesSelector selector = new DisperseEvenlySelector();
    List<SelectedFiles> selectResult = selector.selectedByBufferFile(inputs, outputs);
    this.sorter.mergeFile(selectResult, fileToInput, fileToWriter, flusher);
}

Example 3 with KvEntryFileWriter

use of com.baidu.hugegraph.computer.core.store.KvEntryFileWriter 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);
}

Example 4 with KvEntryFileWriter

use of com.baidu.hugegraph.computer.core.store.KvEntryFileWriter in project hugegraph-computer by hugegraph.

the class FileMergerImpl method mergeInputs.

private void mergeInputs(List<String> inputs, Function<String, EntryIterator> inputToIter, OuterSortFlusher flusher, String output, Function<String, KvEntryFileWriter> fileToWriter) throws Exception {
    /*
         * File value format is different, upper layer is required to
         * provide the file reading mode
         */
    List<EntryIterator> entries = inputs.stream().map(inputToIter).collect(Collectors.toList());
    InputsSorter sorter = new InputsSorterImpl();
    // Merge inputs and write to output
    try (EntryIterator sortedKv = sorter.sort(entries);
        KvEntryFileWriter builder = fileToWriter.apply(output)) {
        flusher.flush(sortedKv, builder);
    }
}