Examples with TempFile com.facebook.presto.orc.TempFile used on opensource projects

Example 1 with TempFile

use of com.facebook.presto.orc.TempFile in project presto by prestodb.

the class TestWriterBlockRawSize method testFileMetadataRawSize.

@Test
public void testFileMetadataRawSize() throws IOException {
    Type type = INTEGER;
    List<Type> types = ImmutableList.of(type);
    int numBlocksPerRowGroup = 3;
    int numBlocksPerStripe = numBlocksPerRowGroup * 5;
    int numStripes = 4;
    int numBlocksPerFile = numBlocksPerStripe * numStripes + 1;
    BlockBuilder blockBuilder = type.createBlockBuilder(null, NUM_ELEMENTS * 2);
    for (int i = 0; i < NUM_ELEMENTS; i++) {
        blockBuilder.appendNull();
        type.writeLong(blockBuilder, i);
    }
    long blockRawSize = ((FixedWidthType) type).getFixedSize() * NUM_ELEMENTS + NUM_ELEMENTS;
    Block block = blockBuilder.build();
    Block[] blocks = new Block[] { block };
    OrcWriterOptions writerOptions = OrcWriterOptions.builder().withRowGroupMaxRowCount(block.getPositionCount() * numBlocksPerRowGroup).withFlushPolicy(DefaultOrcWriterFlushPolicy.builder().withStripeMaxRowCount(block.getPositionCount() * numBlocksPerStripe).build()).build();
    for (OrcEncoding encoding : OrcEncoding.values()) {
        try (TempFile tempFile = new TempFile()) {
            OrcWriter writer = createOrcWriter(tempFile.getFile(), encoding, ZSTD, Optional.empty(), types, writerOptions, new OrcWriterStats());
            for (int i = 0; i < numBlocksPerFile; i++) {
                writer.write(new Page(blocks));
            }
            writer.close();
            writer.validate(new FileOrcDataSource(tempFile.getFile(), new DataSize(1, MEGABYTE), new DataSize(1, MEGABYTE), new DataSize(1, MEGABYTE), true));
            Footer footer = OrcTester.getFileMetadata(tempFile.getFile(), encoding).getFooter();
            verifyValue(encoding, footer.getRawSize(), blockRawSize * numBlocksPerFile);
            assertEquals(footer.getStripes().size(), numStripes + 1);
            int numBlocksRemaining = numBlocksPerFile;
            for (StripeInformation stripeInfo : footer.getStripes()) {
                int numBlocksInStripe = Math.min(numBlocksRemaining, numBlocksPerStripe);
                verifyValue(encoding, stripeInfo.getRawDataSize(), blockRawSize * numBlocksInStripe);
                numBlocksRemaining -= numBlocksInStripe;
            }
        }
    }
}