I got some weird errors when I first attempted the shard of products and ran the validate_lab_shard_collection() script. It repeatedly said that I’d not imported the full document set, but the count I got from mongoimport matched the number in the class materials.
Ultimately I tried a reimport/recreate indices and reran validate again - still failed.
Now I give up and go take a shower and feed the cats.
Come back and run the validate command again so that I can capture the text to post here, and it passed!