private static Map<ColumnDescriptor, Statistics<?>> getStatistics(BlockMetaData blockMetadata, Map<List<String>, RichColumnDescriptor> descriptorsByPath) { ImmutableMap.Builder<ColumnDescriptor, Statistics<?>> statistics = ImmutableMap.builder(); for (ColumnChunkMetaData columnMetaData : blockMetadata.getColumns()) { Statistics<?> columnStatistics = columnMetaData.getStatistics(); if (columnStatistics != null) { RichColumnDescriptor descriptor = descriptorsByPath.get(Arrays.asList(columnMetaData.getPath().toArray())); if (descriptor != null) { statistics.put(descriptor, columnStatistics); } } } return statistics.build(); }
private static Map<ColumnDescriptor, DictionaryDescriptor> getDictionaries(BlockMetaData blockMetadata, ParquetDataSource dataSource, Map<List<String>, RichColumnDescriptor> descriptorsByPath, TupleDomain<ColumnDescriptor> parquetTupleDomain) { ImmutableMap.Builder<ColumnDescriptor, DictionaryDescriptor> dictionaries = ImmutableMap.builder(); for (ColumnChunkMetaData columnMetaData : blockMetadata.getColumns()) { RichColumnDescriptor descriptor = descriptorsByPath.get(Arrays.asList(columnMetaData.getPath().toArray())); if (descriptor != null) { if (isOnlyDictionaryEncodingPages(columnMetaData.getEncodings()) && isColumnPredicate(descriptor, parquetTupleDomain)) { int totalSize = toIntExact(columnMetaData.getTotalSize()); byte[] buffer = new byte[totalSize]; dataSource.readFully(columnMetaData.getStartingPos(), buffer); Optional<DictionaryPage> dictionaryPage = readDictionaryPage(buffer, columnMetaData.getCodec()); dictionaries.put(descriptor, new DictionaryDescriptor(descriptor, dictionaryPage)); break; } } } return dictionaries.build(); }
.toArray(String[]::new); ColumnPath columnPath = ColumnPath.get(path); PrimitiveTypeName primitiveTypeName = messageType.getType(columnPath.toArray()).asPrimitiveType().getPrimitiveTypeName(); ColumnChunkMetaData column = ColumnChunkMetaData.get( columnPath,
public static void showDetails(PrettyPrintWriter out, List<ColumnChunkMetaData> ccmeta) { Map<String,Object> chunks = new LinkedHashMap<String,Object>(); for (ColumnChunkMetaData cmeta : ccmeta) { String[] path = cmeta.getPath().toArray(); Map<String,Object> current = chunks; for (int i = 0; i < path.length - 1; ++i) { String next = path[i]; if (!current.containsKey(next)) { current.put(next, new LinkedHashMap<String,Object>()); } current = (Map<String,Object>)current.get(next); } current.put(path[path.length - 1], cmeta); } showColumnChunkDetails(out, chunks, 0); }
private static long end(List<BlockMetaData> blocks, String requestedSchema) { MessageType requested = MessageTypeParser.parseMessageType(requestedSchema); long length = 0; for (BlockMetaData block : blocks) { List<ColumnChunkMetaData> columns = block.getColumns(); for (ColumnChunkMetaData column : columns) { if (requested.containsPath(column.getPath().toArray())) { length += column.getTotalSize(); } } } return length; }
ColumnChunkMetaData column = ColumnChunkMetaData.get( columnPath, messageType.getType(columnPath.toArray()).asPrimitiveType().getPrimitiveTypeName(), CompressionCodecName.fromParquet(metaData.codec), readEncodings(metaData.encodings), readStats(metaData.statistics, messageType.getType(columnPath.toArray()).asPrimitiveType().getPrimitiveTypeName()), metaData.data_page_offset, metaData.dictionary_page_offset,
ccmds = new ArrayList<ColumnChunkMetaData>(); for (ColumnChunkMetaData ccmd : block.getColumns()) { String path = Joiner.on('.').skipNulls().join(ccmd.getPath().toArray()); if (showColumns.contains(path)) { ccmds.add(ccmd);
public ParquetInputSplit getParquetInputSplit(FileStatus fileStatus, String requestedSchema, Map<String, String> readSupportMetadata) throws IOException { MessageType requested = MessageTypeParser.parseMessageType(requestedSchema); long length = 0; for (BlockMetaData block : this.getRowGroups()) { List<ColumnChunkMetaData> columns = block.getColumns(); for (ColumnChunkMetaData column : columns) { if (requested.containsPath(column.getPath().toArray())) { length += column.getTotalSize(); } } } BlockMetaData lastRowGroup = this.getRowGroups().get(this.getRowGroupCount() - 1); long end = lastRowGroup.getStartingPos() + lastRowGroup.getTotalByteSize(); long[] rowGroupOffsets = new long[this.getRowGroupCount()]; for (int i = 0; i < rowGroupOffsets.length; i++) { rowGroupOffsets[i] = this.getRowGroups().get(i).getStartingPos(); } return new ParquetInputSplit( fileStatus.getPath(), hdfsBlock.getOffset(), end, length, hdfsBlock.getHosts(), rowGroupOffsets ); } }
ColumnChunkMetaData column = ColumnChunkMetaData.get( path, messageType.getType(path.toArray()).asPrimitiveType().getPrimitiveTypeName(), CompressionCodecName.fromParquet(metaData.codec), fromFormatEncodings(metaData.encodings), fromParquetStatistics(metaData.statistics, messageType.getType(path.toArray()).asPrimitiveType().getPrimitiveTypeName()), metaData.data_page_offset, metaData.dictionary_page_offset,
private void addRowGroup(ParquetMetadata parquetMetadata, List<RowGroup> rowGroups, BlockMetaData block) { //rowGroup.total_byte_size = ; List<ColumnChunkMetaData> columns = block.getColumns(); List<ColumnChunk> parquetColumns = new ArrayList<ColumnChunk>(); for (ColumnChunkMetaData columnMetaData : columns) { ColumnChunk columnChunk = new ColumnChunk(columnMetaData.getFirstDataPageOffset()); // verify this is the right offset columnChunk.file_path = block.getPath(); // they are in the same file for now columnChunk.meta_data = new parquet.format.ColumnMetaData( getType(columnMetaData.getType()), toFormatEncodings(columnMetaData.getEncodings()), Arrays.asList(columnMetaData.getPath().toArray()), columnMetaData.getCodec().getParquetCompressionCodec(), columnMetaData.getValueCount(), columnMetaData.getTotalUncompressedSize(), columnMetaData.getTotalSize(), columnMetaData.getFirstDataPageOffset()); columnChunk.meta_data.dictionary_page_offset = columnMetaData.getDictionaryPageOffset(); if (!columnMetaData.getStatistics().isEmpty()) { columnChunk.meta_data.setStatistics(toParquetStatistics(columnMetaData.getStatistics())); } // columnChunk.meta_data.index_page_offset = ; // columnChunk.meta_data.key_value_metadata = ; // nothing yet parquetColumns.add(columnChunk); } RowGroup rowGroup = new RowGroup(parquetColumns, block.getTotalByteSize(), block.getRowCount()); rowGroups.add(rowGroup); }
private static void add(ParquetMetadata footer) { for (BlockMetaData blockMetaData : footer.getBlocks()) { ++ blockCount; MessageType schema = footer.getFileMetaData().getSchema(); recordCount += blockMetaData.getRowCount(); List<ColumnChunkMetaData> columns = blockMetaData.getColumns(); for (ColumnChunkMetaData columnMetaData : columns) { ColumnDescriptor desc = schema.getColumnDescription(columnMetaData.getPath().toArray()); add( desc, columnMetaData.getValueCount(), columnMetaData.getTotalSize(), columnMetaData.getTotalUncompressedSize(), columnMetaData.getEncodings(), columnMetaData.getStatistics()); } } }