Read and deserialize parquet file as RowGroups

[srigumm]

Version: Parquet.Net

Runtime Version: .Net Core

OS: Windows/Linux/MacOSX

Expected behavior

Though our current "Deserialise" API is very helpful to work with parquet files, It still lacks APIs that gives ability to read parquet file as RowGroups. My current project team is in need of such API as we work with huge data like 10million record files, deserializing such a huge file and load entire business objects collection in memory is not working for us due to memory constraints.

So, It would be very helpful to dev teams if we can have these two APIs.

int GetRowGroupCount();
IEnumerable< T > ReadRowGroup(int i);

Actual behavior

No such API exists

Steps to reproduce the behavior

1. Deserialize a parquet file with 10 million records.

Code snippet reproducing the behavior