Sergey Fedoseev

I tried to run it with `perf==1.4` and `perf==1.3`.

@dveeden > Note that there are different behaviors within one database system: > http://sqlfiddle.com/#!6/12e70/3 > > ```sql > CREATE TABLE t1 (f FLOAT); > SELECT 0.1 + 0.2; > INSERT...

@cosmic-byte, could you rebase this please? (don't forget to [isort](https://pycqa.github.io/isort/#using-isort) before push)

1. it looks like we need to modify policies in registry since `s3:GetObjectAttributes` and `s3:GetObjectVersionAttributes` are required 2. should we also modify catalog to enable checksums for uploads? 3. does...

@dimaryaz does this PR supports `quilt3 verify` for packages with old hashes? https://github.com/quiltdata/quilt/blob/d88df8c826685f04d04aef0df4191f794ef2e824/api/python/quilt3/packages.py#L1625-L1660

> Just to be consistent with the way AWS does it Well, `get_object_attributes()` returns checksum without number of parts, so either option is eventually somewhat consistent with AWS :wink: >...

> Ok, maybe it has different config or something. I uploaded a 15MB file - but it didn't use a multi-part upload I think it has 16 MB as multipart...

@dependabot use these labels

@cosmic-byte is this ready for review?

I don't understand what's unexpected. From [docs](https://docs.quiltdata.com/api-reference/package#package.set_dir): > Package.set_dir(self, lkey, path=None, meta=None, update_policy='incoming') ... path(string): path to scan for files to add to package. If None, lkey will be substituted...