enqueue_many_size = SOME_ENQUEUE_MANY_SIZE
reader = tf.TFRecordReader(options=tf.python_io.TFRecordOptions(tf.
    python_io.TFRecordCompressionType.ZLIB))
_, queue_batch = reader.read_up_to(filename_queue, enqueue_many_size)
Benchmark of HowTo: Reading Data