Why no bulk Arrow→Parquet write API in Java? How to avoid row-by-row RecordConsumer + optimize?

[Fenil-v]

Describe the usage question you have. Please include as many useful details as possible.

I have ~ 20KB objects that I need to write to Parquet efficiently from Java.
In C++, C#, and Python there's a direct/bulk Arrow-Parquet write (e.g. WriteTable / write_table) that avoids row-by-row iteration, but in Java I only see row-by-row paths via RecordConsumer or internal/unstable column writers.
Questions:

1. Is there a supported bulk/columnar Arrow-Parquet write API in Java (e.g, VectorSchemaRoot
   → Parquet) that avoids row-by-row calls?
2. If not, why is Java limited to row-by-row writes today? Any roadmap for feature parity with C++/Python/C#?
3. For now, what's the recommended optimization path to write 20KB objects at high throughput from Java (without JNI), or is JNI/Dataset the recommended route?
4. Any best practices (batch sizing, encodings, writer settings) to mitigate the row-by-row overhead?

Thanks

Component(s)

No response

[pyckle]

I had the same issue with the Java parquet driver not supporting parquet column based (as opposed to row base) operations, so I wrote it myself. It's been open sourced: https://github.com/Earnix/parquetforge
There are some limitations, but this may be a better solution than writing JNI into the C++ driver. Feedback is welcome.