private void readPageV1(DataPageV1 page) { ValuesReader rlReader = page.getRlEncoding().getValuesReader(path, REPETITION_LEVEL); ValuesReader dlReader = page.getDlEncoding().getValuesReader(path, DEFINITION_LEVEL); this.repetitionLevelColumn = new ValuesReaderIntIterator(rlReader); this.definitionLevelColumn = new ValuesReaderIntIterator(dlReader); int valueCount = page.getValueCount(); try { BytesInput bytes = page.getBytes(); LOG.debug("page size {} bytes and {} values", bytes.size(), valueCount); LOG.debug("reading repetition levels at 0"); ByteBufferInputStream in = bytes.toInputStream(); rlReader.initFromPage(valueCount, in); LOG.debug("reading definition levels at {}", in.position()); dlReader.initFromPage(valueCount, in); LOG.debug("reading data at {}", in.position()); initDataReader(page.getValueEncoding(), in, valueCount); } catch (IOException e) { throw new ParquetDecodingException("could not read page " + page + " in col " + path, e); } newPageInitialized(page); }