presto-hive/src/main/java/io/prestosql/plugin/hive/GenericHiveRecordCursor.java/GenericHiveRecordCursor/close
class GenericHiveRecordCursor:    @Override
    public void close()
    {
        // some hive input formats are broken and bad things can happen if you close them multiple times
        if (closed) {
            return;
        }
        closed = true;

        updateCompletedBytes();

        try {
            recordReader.close();
        }
        catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }