msalib commented on issue #1932:
URL: https://github.com/apache/arrow-rs/issues/1932#issuecomment-1165074201
Sure! For me, expected behavior is that `pandas` will read a rust-produced
parquet file with UTC timestamp columns and recognize that they're UTC. Like
this:
```python
import pandas as pd
assert str(pd.read_parquet("/tmp/q.parquet").dtypes.metric_date) ==
'datetime64[ns, UTC]'
# and not 'datetime64[ns]'
```
Thank you so much for explaining that given the nature of the specification,
this might not be feasible; I was going crazy. In part, because this used to
work (I have a python unit test that invokes rust code and reads parquet files
generated by rust). Up to version 14 of parquet+arrow, this worked fine. But as
of version 15, the behavior changed.
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