Is S3 dbfs mount faster then direct access?

[140015]

Hi,

Is there any speed difference between mounted s3 bucket and direct access during reading/writing delta tables or other type of files? I tried to find something in docs, but didn't found anything.

[Vivian_Wilfred · Accepted solution]

Hi @Jacek Dembowiak​ , behind the scenes, mounting an S3 bucket and reading from it works the same way as directly accessing it. Mounts are just metadata, the underlying access mechanism is the same for both the scenarios you mentioned. Mounting the storage is for ease of usage and security but not for improving speed.

I hope this answers your question. Please mark the comment as the best answer to resolve the query.