ParquetFileReader reader() { if (reader != null) { reader.setRequestedSchema(projection); return reader; } ParquetFileReader newReader = newReader(file, options); newReader.setRequestedSchema(projection); return newReader; }
public void initialize(ParquetFileReader reader, Configuration configuration) throws IOException { // initialize a ReadContext for this file this.reader = reader; FileMetaData parquetFileMetadata = reader.getFooter().getFileMetaData(); this.fileSchema = parquetFileMetadata.getSchema(); Map<String, String> fileMetadata = parquetFileMetadata.getKeyValueMetaData(); ReadSupport.ReadContext readContext = readSupport.init(new InitContext( configuration, toSetMultiMap(fileMetadata), fileSchema)); this.columnIOFactory = new ColumnIOFactory(parquetFileMetadata.getCreatedBy()); this.requestedSchema = readContext.getRequestedSchema(); this.columnCount = requestedSchema.getPaths().size(); this.recordConverter = readSupport.prepareForRead( configuration, fileMetadata, fileSchema, readContext); this.strictTypeChecking = configuration.getBoolean(STRICT_TYPE_CHECKING, true); this.total = reader.getRecordCount(); this.unmaterializableRecordCounter = new UnmaterializableRecordCounter(configuration, total); this.filterRecords = configuration.getBoolean(RECORD_FILTERING_ENABLED, true); reader.setRequestedSchema(requestedSchema); LOG.info("RecordReader initialized will read a total of {} records.", total); }
public void initialize(ParquetFileReader reader, Configuration configuration) throws IOException { // initialize a ReadContext for this file this.reader = reader; FileMetaData parquetFileMetadata = reader.getFooter().getFileMetaData(); this.fileSchema = parquetFileMetadata.getSchema(); Map<String, String> fileMetadata = parquetFileMetadata.getKeyValueMetaData(); ReadSupport.ReadContext readContext = readSupport.init(new InitContext( configuration, toSetMultiMap(fileMetadata), fileSchema)); this.columnIOFactory = new ColumnIOFactory(parquetFileMetadata.getCreatedBy()); this.requestedSchema = readContext.getRequestedSchema(); this.columnCount = requestedSchema.getPaths().size(); this.recordConverter = readSupport.prepareForRead( configuration, fileMetadata, fileSchema, readContext); this.strictTypeChecking = configuration.getBoolean(STRICT_TYPE_CHECKING, true); this.total = reader.getFilteredRecordCount(); this.unmaterializableRecordCounter = new UnmaterializableRecordCounter(configuration, total); this.filterRecords = configuration.getBoolean(RECORD_FILTERING_ENABLED, true); reader.setRequestedSchema(requestedSchema); LOG.info("RecordReader initialized will read a total of {} records.", total); }
public void initialize(ParquetFileReader reader, ParquetReadOptions options) { // copy custom configuration to the Configuration passed to the ReadSupport Configuration conf = new Configuration(); if (options instanceof HadoopReadOptions) { conf = ((HadoopReadOptions) options).getConf(); } for (String property : options.getPropertyNames()) { conf.set(property, options.getProperty(property)); } // initialize a ReadContext for this file this.reader = reader; FileMetaData parquetFileMetadata = reader.getFooter().getFileMetaData(); this.fileSchema = parquetFileMetadata.getSchema(); Map<String, String> fileMetadata = parquetFileMetadata.getKeyValueMetaData(); ReadSupport.ReadContext readContext = readSupport.init(new InitContext(conf, toSetMultiMap(fileMetadata), fileSchema)); this.columnIOFactory = new ColumnIOFactory(parquetFileMetadata.getCreatedBy()); this.requestedSchema = readContext.getRequestedSchema(); this.columnCount = requestedSchema.getPaths().size(); this.recordConverter = readSupport.prepareForRead(conf, fileMetadata, fileSchema, readContext); this.strictTypeChecking = options.isEnabled(STRICT_TYPE_CHECKING, true); this.total = reader.getRecordCount(); this.unmaterializableRecordCounter = new UnmaterializableRecordCounter(options, total); this.filterRecords = options.useRecordFilter(); reader.setRequestedSchema(requestedSchema); LOG.info("RecordReader initialized will read a total of {} records.", total); }
public void initialize(ParquetFileReader reader, ParquetReadOptions options) { // copy custom configuration to the Configuration passed to the ReadSupport Configuration conf = new Configuration(); if (options instanceof HadoopReadOptions) { conf = ((HadoopReadOptions) options).getConf(); } for (String property : options.getPropertyNames()) { conf.set(property, options.getProperty(property)); } // initialize a ReadContext for this file this.reader = reader; FileMetaData parquetFileMetadata = reader.getFooter().getFileMetaData(); this.fileSchema = parquetFileMetadata.getSchema(); Map<String, String> fileMetadata = parquetFileMetadata.getKeyValueMetaData(); ReadSupport.ReadContext readContext = readSupport.init(new InitContext(conf, toSetMultiMap(fileMetadata), fileSchema)); this.columnIOFactory = new ColumnIOFactory(parquetFileMetadata.getCreatedBy()); this.requestedSchema = readContext.getRequestedSchema(); this.columnCount = requestedSchema.getPaths().size(); this.recordConverter = readSupport.prepareForRead(conf, fileMetadata, fileSchema, readContext); this.strictTypeChecking = options.isEnabled(STRICT_TYPE_CHECKING, true); this.total = reader.getFilteredRecordCount(); this.unmaterializableRecordCounter = new UnmaterializableRecordCounter(options, total); this.filterRecords = options.useRecordFilter(); reader.setRequestedSchema(requestedSchema); LOG.info("RecordReader initialized will read a total of {} records.", total); }