databricks delta lake file extension is parquet

Question

may I know is it correct that the delta lake file extension is *.snappy.parquet ??
I use the code

 df.write.format('delta').save(blobpath)

any one has the idea ???

Answer 1

Yes, that's correct. Delta is built on top of the Parquet files as storage format, and adds additional capabilities such as transactions, ...

P.S. this is answered in the Delta's FAQ