Examples with HeapByteBufferAllocator org.apache.parquet.bytes.HeapByteBufferAllocator used on opensource projects

Example 1 with HeapByteBufferAllocator

use of org.apache.parquet.bytes.HeapByteBufferAllocator in project parquet-mr by apache.

the class TestColumnChunkPageWriteStore method testColumnOrderV1.

@Test
public void testColumnOrderV1() throws IOException {
    ParquetFileWriter mockFileWriter = Mockito.mock(ParquetFileWriter.class);
    InOrder inOrder = inOrder(mockFileWriter);
    MessageType schema = Types.buildMessage().required(BINARY).as(UTF8).named("a_string").required(INT32).named("an_int").required(INT64).named("a_long").required(FLOAT).named("a_float").required(DOUBLE).named("a_double").named("order_test");
    BytesInput fakeData = BytesInput.fromInt(34);
    int fakeCount = 3;
    BinaryStatistics fakeStats = new BinaryStatistics();
    // TODO - look back at this, an allocator was being passed here in the ByteBuffer changes
    // see comment at this constructor
    ColumnChunkPageWriteStore store = new ColumnChunkPageWriteStore(compressor(UNCOMPRESSED), schema, new HeapByteBufferAllocator());
    for (ColumnDescriptor col : schema.getColumns()) {
        PageWriter pageWriter = store.getPageWriter(col);
        pageWriter.writePage(fakeData, fakeCount, fakeStats, RLE, RLE, PLAIN);
    }
    // flush to the mock writer
    store.flushToFileWriter(mockFileWriter);
    for (ColumnDescriptor col : schema.getColumns()) {
        inOrder.verify(mockFileWriter).startColumn(eq(col), eq((long) fakeCount), eq(UNCOMPRESSED));
    }
}

Example 2 with HeapByteBufferAllocator

use of org.apache.parquet.bytes.HeapByteBufferAllocator in project parquet-mr by apache.

the class TestColumnChunkPageWriteStore method test.

@Test
public void test() throws Exception {
    Path file = new Path("target/test/TestColumnChunkPageWriteStore/test.parquet");
    Path root = file.getParent();
    FileSystem fs = file.getFileSystem(conf);
    if (fs.exists(root)) {
        fs.delete(root, true);
    }
    fs.mkdirs(root);
    MessageType schema = MessageTypeParser.parseMessageType("message test { repeated binary bar; }");
    ColumnDescriptor col = schema.getColumns().get(0);
    Encoding dataEncoding = PLAIN;
    int valueCount = 10;
    int d = 1;
    int r = 2;
    int v = 3;
    BytesInput definitionLevels = BytesInput.fromInt(d);
    BytesInput repetitionLevels = BytesInput.fromInt(r);
    Statistics<?> statistics = Statistics.getBuilderForReading(Types.required(PrimitiveTypeName.BINARY).named("test_binary")).build();
    BytesInput data = BytesInput.fromInt(v);
    int rowCount = 5;
    int nullCount = 1;
    {
        ParquetFileWriter writer = new ParquetFileWriter(conf, schema, file);
        writer.start();
        writer.startBlock(rowCount);
        {
            ColumnChunkPageWriteStore store = new ColumnChunkPageWriteStore(compressor(GZIP), schema, new HeapByteBufferAllocator());
            PageWriter pageWriter = store.getPageWriter(col);
            pageWriter.writePageV2(rowCount, nullCount, valueCount, repetitionLevels, definitionLevels, dataEncoding, data, statistics);
            store.flushToFileWriter(writer);
        }
        writer.endBlock();
        writer.end(new HashMap<String, String>());
    }
    {
        ParquetMetadata footer = ParquetFileReader.readFooter(conf, file, NO_FILTER);
        ParquetFileReader reader = new ParquetFileReader(conf, footer.getFileMetaData(), file, footer.getBlocks(), schema.getColumns());
        PageReadStore rowGroup = reader.readNextRowGroup();
        PageReader pageReader = rowGroup.getPageReader(col);
        DataPageV2 page = (DataPageV2) pageReader.readPage();
        assertEquals(rowCount, page.getRowCount());
        assertEquals(nullCount, page.getNullCount());
        assertEquals(valueCount, page.getValueCount());
        assertEquals(d, intValue(page.getDefinitionLevels()));
        assertEquals(r, intValue(page.getRepetitionLevels()));
        assertEquals(dataEncoding, page.getDataEncoding());
        assertEquals(v, intValue(page.getData()));
        assertEquals(statistics.toString(), page.getStatistics().toString());
        reader.close();
    }
}