presto-orc/src/main/java/io/prestosql/orc/stream/UncompressedOrcChunkLoader.java/UncompressedOrcChunkLoader/UncompressedOrcChunkLoader
class UncompressedOrcChunkLoader:    public UncompressedOrcChunkLoader(OrcDataReader dataReader, AggregatedMemoryContext memoryContext)
    {
        this.dataReader = requireNonNull(dataReader, "loader is null");
        requireNonNull(memoryContext, "memoryContext is null");
        this.dataReaderMemoryUsage = memoryContext.newLocalMemoryContext(UncompressedOrcChunkLoader.class.getSimpleName());
        dataReaderMemoryUsage.setBytes(dataReader.getRetainedSize());
    }