Blog post about changes to write wide columns, large string columns

[alamb]

@adriangb has made some great contributions to the Rust parquet writer to support several usecases where parquet writers typically struggle:

• fix(parquet): bound data page byte size for large variable-width values #9972
  -Pluggable page spilling API for the Parquet ArrowWriter (PageStore) #10020

I think it would be amazing to write a blog post explaining the challenge and the solutions

Challenge 1: Oversized pages for large binary/string columns

• Parquet writer can produce massively oversized data pages for large variable-width values #10061

Challenge 2: RAM buffering requirements when writing large Row Groups

• Bound ArrowWriter peak memory  #10071

The idea is to write a blog in https://arrow.apache.org/blog/ (source in https://github.com/apache/arrow-site) that explains the challenges and how we solved it with Software Engineering rather than a new file format

[alamb]

I made a demo that shows how effective the memory savings from this can be:
https://github.com/alamb/wide-parquet