how to do this when using memmap_threshold

[raulcarlomagno]

i wanted to try scalar quantization for my vectors
before, to prevent indexing while uploading vectors, i used to set indexing_threshold=0 before uploading, and then set it to the default value to start indexing.
i would like to try quantizacion with original vectors on disk and quantized in RAM
so i should have set this
optimizers_config=models.OptimizersConfigDiff(memmap_threshold=20000)
but, i dont know if this will try to index while uploading
should i set memmap_threshold=0 before uploading and set it to 20000 later?

thanks

[generall]

Changing memmap_threshold is not necessary in your case