Examples with HoodieHFileDataBlock org.apache.hudi.common.table.log.block.HoodieHFileDataBlock used on opensource projects

Example 1 with HoodieHFileDataBlock

use of org.apache.hudi.common.table.log.block.HoodieHFileDataBlock in project hudi by apache.

the class InputFormatTestUtil method writeDataBlockToLogFile.

public static HoodieLogFormat.Writer writeDataBlockToLogFile(File partitionDir, FileSystem fs, Schema schema, String fileId, String baseCommit, String newCommit, int numberOfRecords, int offset, int logVersion, HoodieLogBlock.HoodieLogBlockType logBlockType) throws InterruptedException, IOException {
    HoodieLogFormat.Writer writer = HoodieLogFormat.newWriterBuilder().onParentPath(new Path(partitionDir.getPath())).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId(fileId).withLogVersion(logVersion).withRolloverLogWriteToken("1-0-1").overBaseCommit(baseCommit).withFs(fs).build();
    List<IndexedRecord> records = new ArrayList<>();
    for (int i = offset; i < offset + numberOfRecords; i++) {
        records.add(SchemaTestUtil.generateAvroRecordFromJson(schema, i, newCommit, "fileid0"));
    }
    Schema writeSchema = records.get(0).getSchema();
    Map<HoodieLogBlock.HeaderMetadataType, String> header = new HashMap<>();
    header.put(HoodieLogBlock.HeaderMetadataType.INSTANT_TIME, newCommit);
    header.put(HoodieLogBlock.HeaderMetadataType.SCHEMA, writeSchema.toString());
    HoodieDataBlock dataBlock = null;
    if (logBlockType == HoodieLogBlock.HoodieLogBlockType.HFILE_DATA_BLOCK) {
        dataBlock = new HoodieHFileDataBlock(records, header, Compression.Algorithm.GZ);
    } else if (logBlockType == HoodieLogBlock.HoodieLogBlockType.PARQUET_DATA_BLOCK) {
        dataBlock = new HoodieParquetDataBlock(records, header, HoodieRecord.RECORD_KEY_METADATA_FIELD, CompressionCodecName.GZIP);
    } else {
        dataBlock = new HoodieAvroDataBlock(records, header, HoodieRecord.RECORD_KEY_METADATA_FIELD);
    }
    writer.appendBlock(dataBlock);
    return writer;
}

Example 2 with HoodieHFileDataBlock

use of org.apache.hudi.common.table.log.block.HoodieHFileDataBlock in project hudi by apache.

the class HoodieLogFileReader method readBlock.

// TODO : convert content and block length to long by using ByteBuffer, raw byte [] allows
// for max of Integer size
private HoodieLogBlock readBlock() throws IOException {
    int blockSize;
    try {
        // 1 Read the total size of the block
        blockSize = (int) inputStream.readLong();
    } catch (EOFException | CorruptedLogFileException e) {
        // Create a corrupt block by finding the next MAGIC marker or EOF
        return createCorruptBlock();
    }
    // We may have had a crash which could have written this block partially
    // Skip blockSize in the stream and we should either find a sync marker (start of the next
    // block) or EOF. If we did not find either of it, then this block is a corrupted block.
    boolean isCorrupted = isBlockCorrupted(blockSize);
    if (isCorrupted) {
        return createCorruptBlock();
    }
    // 2. Read the version for this log format
    HoodieLogFormat.LogFormatVersion nextBlockVersion = readVersion();
    // 3. Read the block type for a log block
    HoodieLogBlockType blockType = tryReadBlockType(nextBlockVersion);
    // 4. Read the header for a log block, if present
    Map<HeaderMetadataType, String> header = nextBlockVersion.hasHeader() ? HoodieLogBlock.getLogMetadata(inputStream) : null;
    // 5. Read the content length for the content
    // Fallback to full-block size if no content-length
    // TODO replace w/ hasContentLength
    int contentLength = nextBlockVersion.getVersion() != HoodieLogFormatVersion.DEFAULT_VERSION ? (int) inputStream.readLong() : blockSize;
    // 6. Read the content or skip content based on IO vs Memory trade-off by client
    long contentPosition = inputStream.getPos();
    boolean shouldReadLazily = readBlockLazily && nextBlockVersion.getVersion() != HoodieLogFormatVersion.DEFAULT_VERSION;
    Option<byte[]> content = HoodieLogBlock.tryReadContent(inputStream, contentLength, shouldReadLazily);
    // 7. Read footer if any
    Map<HeaderMetadataType, String> footer = nextBlockVersion.hasFooter() ? HoodieLogBlock.getLogMetadata(inputStream) : null;
    // log file in reverse
    if (nextBlockVersion.hasLogBlockLength()) {
        inputStream.readLong();
    }
    // 9. Read the log block end position in the log file
    long blockEndPos = inputStream.getPos();
    HoodieLogBlock.HoodieLogBlockContentLocation logBlockContentLoc = new HoodieLogBlock.HoodieLogBlockContentLocation(hadoopConf, logFile, contentPosition, contentLength, blockEndPos);
    switch(Objects.requireNonNull(blockType)) {
        case AVRO_DATA_BLOCK:
            if (nextBlockVersion.getVersion() == HoodieLogFormatVersion.DEFAULT_VERSION) {
                return HoodieAvroDataBlock.getBlock(content.get(), readerSchema);
            } else {
                return new HoodieAvroDataBlock(inputStream, content, readBlockLazily, logBlockContentLoc, Option.ofNullable(readerSchema), header, footer, keyField);
            }
        case HFILE_DATA_BLOCK:
            checkState(nextBlockVersion.getVersion() != HoodieLogFormatVersion.DEFAULT_VERSION, String.format("HFile block could not be of version (%d)", HoodieLogFormatVersion.DEFAULT_VERSION));
            return new HoodieHFileDataBlock(inputStream, content, readBlockLazily, logBlockContentLoc, Option.ofNullable(readerSchema), header, footer, enableRecordLookups);
        case PARQUET_DATA_BLOCK:
            checkState(nextBlockVersion.getVersion() != HoodieLogFormatVersion.DEFAULT_VERSION, String.format("Parquet block could not be of version (%d)", HoodieLogFormatVersion.DEFAULT_VERSION));
            return new HoodieParquetDataBlock(inputStream, content, readBlockLazily, logBlockContentLoc, Option.ofNullable(readerSchema), header, footer, keyField);
        case DELETE_BLOCK:
            return new HoodieDeleteBlock(content, inputStream, readBlockLazily, Option.of(logBlockContentLoc), header, footer);
        case COMMAND_BLOCK:
            return new HoodieCommandBlock(content, inputStream, readBlockLazily, Option.of(logBlockContentLoc), header, footer);
        default:
            throw new HoodieNotSupportedException("Unsupported Block " + blockType);
    }
}