It’s clear that before we inserted any data, we had 20 files that were in the PRECREATED state. After inserting 10 rows, we now have 18 PRECREATED files, and 2 UNDER CONSTRUCTION files, which means the In-Memory engine is populating these files, that they are “open” in terms of their CHECKPOINT status. If you don’t understand what these terms mean, please read Part 1.
But there’s one thing that doesn’t look right here: we’ve inserted data into the table, but sizeBytesUsed is still zero for the UNDER CONSTRUCTION files. Why is that?
Ned does assume that you’ve read part 1 of the series already.