SEO implication of adding large number of new product pages

[DHS_SH]

If I have an eCommerce website containing 10,000 product pages and then I add 10,000 new product pages using a bulk upload (with limited/basic but unique content), does this pose any SEO risk?

I am obviously aware of the risks of adding a large number of low quality content to the website, which is not the case here, however what I am trying to ascertain is whether simply doubling the number of pages in itself causes any risk to our SEO efforts? Does it flag to the Search Engines that something "spammy" is happening (even if its not)

[JordanLowry]

If they are new products with unique descriptions and content I could not see it being flagged as spammy however thin content could be an issue. I think it would also depend on if you handle product variants properly too. I could see it being an issue if you build a separate page for each product variant though.