wgtmac opened a new pull request, #34054:
URL: https://github.com/apache/arrow/pull/34054

   ### Rationale for this change
   
   Parquet C++ reader supports reading page index from file, but the writer 
does not yet support writing it.
   
   ### What changes are included in this PR?
   
   Parquet file writer collect page index from all data pages and serialize 
page index into the file.
   
   ### Are these changes tested?
   
   Not yet, will be added later.
   
   ### Are there any user-facing changes?
   
   `WriterProperties::enable_write_page_index()` and 
`WriterProperties::disable_write_page_index()` have been added to toggle it on 
and off.


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