[BUG] Exception when a column only contains nan values

[ebsklm]

Parquet Viewer Version

4.2.0.0

Where was the parquet file created?

Created with PyArrow version 25.0.0. Also tried with version 23.0.1, same result.

Sample File

Below file is a .parquet file, however unable to upload with extension .parquet. Change back to .parquet for testing!
f.txt

Describe the bug

When a field is selected that only contains nan values, ParquetViewer is throwing below exception.

Reading the exception, I suspect this has to do with missing statistics in the metadata. Where a normal column has information about the min and max value in the statistics, a columns with only nan values does not. Screenshot from the provided example file below.

Reading the example file with Pyarrow works as expected.

Screenshots

Screenshots in description.

Additional context

[mukunku]

Looks like this is an issue/limitation with the Parquet.NET engine. Can you try the same file with the self-contained version?

I tested it locally and that version is able to open your file as it has the DuckDB engine as a fallback if the ParquetNET engine fails to open a file.

In the meantime I reached out to the Parquet.NET repo to see if we can get this file supported.

[ebsklm]

Interesting, that works! Thank you!