Examples with RcFileEncoding io.trino.rcfile.RcFileEncoding used on opensource projects

Example 1 with RcFileEncoding

use of io.trino.rcfile.RcFileEncoding in project trino by trinodb.

the class RcFileFileWriterFactory method createFileWriter.

@Override
public Optional<FileWriter> createFileWriter(Path path, List<String> inputColumnNames, StorageFormat storageFormat, Properties schema, JobConf configuration, ConnectorSession session, OptionalInt bucketNumber, AcidTransaction transaction, boolean useAcidSchema, WriterKind writerKind) {
    if (!RCFileOutputFormat.class.getName().equals(storageFormat.getOutputFormat())) {
        return Optional.empty();
    }
    RcFileEncoding rcFileEncoding;
    if (LazyBinaryColumnarSerDe.class.getName().equals(storageFormat.getSerde())) {
        rcFileEncoding = new BinaryRcFileEncoding(timeZone);
    } else if (ColumnarSerDe.class.getName().equals(storageFormat.getSerde())) {
        rcFileEncoding = createTextVectorEncoding(schema);
    } else {
        return Optional.empty();
    }
    Optional<String> codecName = Optional.ofNullable(configuration.get(FileOutputFormat.COMPRESS_CODEC));
    // existing tables and partitions may have columns in a different order than the writer is providing, so build
    // an index to rearrange columns in the proper order
    List<String> fileColumnNames = getColumnNames(schema);
    List<Type> fileColumnTypes = getColumnTypes(schema).stream().map(hiveType -> hiveType.getType(typeManager, getTimestampPrecision(session))).collect(toList());
    int[] fileInputColumnIndexes = fileColumnNames.stream().mapToInt(inputColumnNames::indexOf).toArray();
    try {
        FileSystem fileSystem = hdfsEnvironment.getFileSystem(session.getIdentity(), path, configuration);
        OutputStream outputStream = fileSystem.create(path, false);
        Optional<Supplier<RcFileDataSource>> validationInputFactory = Optional.empty();
        if (isRcfileOptimizedWriterValidate(session)) {
            validationInputFactory = Optional.of(() -> {
                try {
                    return new HdfsRcFileDataSource(path.toString(), fileSystem.open(path), fileSystem.getFileStatus(path).getLen(), stats);
                } catch (IOException e) {
                    throw new TrinoException(HIVE_WRITE_VALIDATION_FAILED, e);
                }
            });
        }
        Callable<Void> rollbackAction = () -> {
            fileSystem.delete(path, false);
            return null;
        };
        return Optional.of(new RcFileFileWriter(outputStream, rollbackAction, rcFileEncoding, fileColumnTypes, codecName, fileInputColumnIndexes, ImmutableMap.<String, String>builder().put(PRESTO_VERSION_NAME, nodeVersion.toString()).put(PRESTO_QUERY_ID_NAME, session.getQueryId()).buildOrThrow(), validationInputFactory));
    } catch (Exception e) {
        throw new TrinoException(HIVE_WRITER_OPEN_ERROR, "Error creating RCFile file", e);
    }
}

Example 2 with RcFileEncoding

use of io.trino.rcfile.RcFileEncoding in project trino by trinodb.

the class RcFilePageSourceFactory method createPageSource.

@Override
public Optional<ReaderPageSource> createPageSource(Configuration configuration, ConnectorSession session, Path path, long start, long length, long estimatedFileSize, Properties schema, List<HiveColumnHandle> columns, TupleDomain<HiveColumnHandle> effectivePredicate, Optional<AcidInfo> acidInfo, OptionalInt bucketNumber, boolean originalFile, AcidTransaction transaction) {
    RcFileEncoding rcFileEncoding;
    String deserializerClassName = getDeserializerClassName(schema);
    if (deserializerClassName.equals(LazyBinaryColumnarSerDe.class.getName())) {
        rcFileEncoding = new BinaryRcFileEncoding(timeZone);
    } else if (deserializerClassName.equals(ColumnarSerDe.class.getName())) {
        rcFileEncoding = createTextVectorEncoding(schema);
    } else {
        return Optional.empty();
    }
    checkArgument(acidInfo.isEmpty(), "Acid is not supported");
    List<HiveColumnHandle> projectedReaderColumns = columns;
    Optional<ReaderColumns> readerProjections = projectBaseColumns(columns);
    if (readerProjections.isPresent()) {
        projectedReaderColumns = readerProjections.get().get().stream().map(HiveColumnHandle.class::cast).collect(toImmutableList());
    }
    RcFileDataSource dataSource;
    try {
        FileSystem fileSystem = hdfsEnvironment.getFileSystem(session.getIdentity(), path, configuration);
        FSDataInputStream inputStream = hdfsEnvironment.doAs(session.getIdentity(), () -> fileSystem.open(path));
        if (estimatedFileSize < BUFFER_SIZE.toBytes()) {
            // Handle potentially imprecise file lengths by reading the footer
            try {
                FSDataInputStreamTail fileTail = FSDataInputStreamTail.readTail(path.toString(), estimatedFileSize, inputStream, toIntExact(BUFFER_SIZE.toBytes()));
                dataSource = new MemoryRcFileDataSource(new RcFileDataSourceId(path.toString()), fileTail.getTailSlice());
            } finally {
                inputStream.close();
            }
        } else {
            long fileSize = hdfsEnvironment.doAs(session.getIdentity(), () -> fileSystem.getFileStatus(path).getLen());
            dataSource = new HdfsRcFileDataSource(path.toString(), inputStream, fileSize, stats);
        }
    } catch (Exception e) {
        if (nullToEmpty(e.getMessage()).trim().equals("Filesystem closed") || e instanceof FileNotFoundException) {
            throw new TrinoException(HIVE_CANNOT_OPEN_SPLIT, e);
        }
        throw new TrinoException(HIVE_CANNOT_OPEN_SPLIT, splitError(e, path, start, length), e);
    }
    length = min(dataSource.getSize() - start, length);
    // Split may be empty now that the correct file size is known
    if (length <= 0) {
        return Optional.of(noProjectionAdaptation(new EmptyPageSource()));
    }
    try {
        ImmutableMap.Builder<Integer, Type> readColumns = ImmutableMap.builder();
        HiveTimestampPrecision timestampPrecision = getTimestampPrecision(session);
        for (HiveColumnHandle column : projectedReaderColumns) {
            readColumns.put(column.getBaseHiveColumnIndex(), column.getHiveType().getType(typeManager, timestampPrecision));
        }
        RcFileReader rcFileReader = new RcFileReader(dataSource, rcFileEncoding, readColumns.buildOrThrow(), new AircompressorCodecFactory(new HadoopCodecFactory(configuration.getClassLoader())), start, length, BUFFER_SIZE);
        ConnectorPageSource pageSource = new RcFilePageSource(rcFileReader, projectedReaderColumns);
        return Optional.of(new ReaderPageSource(pageSource, readerProjections));
    } catch (Throwable e) {
        try {
            dataSource.close();
        } catch (IOException ignored) {
        }
        if (e instanceof TrinoException) {
            throw (TrinoException) e;
        }
        String message = splitError(e, path, start, length);
        if (e instanceof RcFileCorruptionException) {
            throw new TrinoException(HIVE_BAD_DATA, message, e);
        }
        if (e instanceof BlockMissingException) {
            throw new TrinoException(HIVE_MISSING_DATA, message, e);
        }
        throw new TrinoException(HIVE_CANNOT_OPEN_SPLIT, message, e);
    }
}