Implement dictionary required for binary parquet data

[Dandandan]

I got this error when trying out arrow2 on Parquet data via DataFusion / TPC-H benchmark.

Error: ArrowError(External("", ArrowError(External("", Execution("Arrow error: Not yet implemented: Decoding \"RleDictionary\"-encoded, dictionary-encoded required V1 pages is not yet implemented for Binary")))))

[jorgecarleitao]

Datafusion only benchmarks with ideal data: who uses required fields in parquet in real life? ^_^

[Dandandan]

Datafusion only benchmarks with ideal data: who uses required fields in parquet in real life? ^_^

LOL 😆

Not joking - I think IRL of data can be, especially expires from relational databases.
Also new tech like delta lake has (e.g. non null) constraints (not sure if it changes the parquet output though) now which hopefully means everyone is going to finally have good data quality 😂