Correctly coerce Parquet Int96 timestamps into requested TimeUnits

[jaychia]

Addresses the first part of issue #1527

Instead of always naively parsing Parquet Int96 timestamps into TimeUnit::Nanosecond, we match on the requested timeunit and perform timeunit-specific parsing

This makes parsing safer when reading Int96 timestamps that are outside of the range of timestamp[ns] (e.g. timestamps with dates like the years 1000 or 3000) instead of the current behavior which is to always parse the timestamps with the Nanosecond timeunit, and overflow.

[jaychia]

Also happy to move the int96_to_i64_*s logic over into the parquet2 repo!

[ritchie46]

Also happy to move the int96_to_i64_*s

I believe that all arrow datatype related conversions are done here, so that is fine.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.66% ⚠️

Comparison is base (b09e580) 83.73% compared to head (b749735) 83.07%.
Report is 49 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1532      +/-   ##
==========================================
- Coverage   83.73%   83.07%   -0.66%     
==========================================
  Files         389      389              
  Lines       41811    42632     +821     
==========================================
+ Hits        35009    35417     +408     
- Misses       6802     7215     +413     

Files Changed	Coverage Δ
src/io/parquet/read/deserialize/simple.rs	86.27% <100.00%> (+1.76%)	⬆️

... and 54 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jaychia]

Second PR is up! #1533

[jaychia]

@ritchie46 any chance you could retrigger CI - Seems to be failing on some flaky token issues?

{'detail': ErrorDetail(string='Unable to locate build via Github Actions API. Please upload with the Codecov repository upload token to resolve issue.', code='not_found')}

[jaychia]

Thanks for the stamp @sundy-li!

I had to make a new PR to fix lints since they were re-enabled last week. Would appreciate some help with launching CI :)

[sundy-li]

Merged, will create a new pr to fix the clippy.