Field name with dot (.)

[felipepessoto]

This commit 16b55d5 added a validation to disallow fields with dots.

Do we really have a reason to don't accept dots? If I comment the throw line I can read a file with dots in column names, and the only failing test is the test that validates if it throws when we use dots.

I couldn't find any spec saying dots are not allowed.

Thanks.

[kirchsth]

A dot is the Schema.PathSeparator and used in e.g. paths of StructField's as separator if you store e.g. (list of) structs

[felipepessoto]

The problem is, some viewer like ParquetFileViewer can't open the parquet files if column has a dot.

[felipepessoto]

Any update? Is this by design? Is it possible to fix it, or have a opt-in option to allow dots?

[aloneguid]

Parquet spec does allow dots so Id say we should too.

[felipepessoto]

Fixed