tustvold opened a new pull request, #3405:
URL: https://github.com/apache/arrow-rs/pull/3405

   # Which issue does this PR close?
   
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   Closes #.
   
   # Rationale for this change
    
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   I recently found myself wanting to debug filter pushdown for a specific 
parquet file, this file had a page index but did not store statistics inline 
within the pages (as is perfectly valid). Unfortunately this meant that 
parquet-tools dump fails to print the statistics, which made debugging this 
issue complicated.
   
   # What changes are included in this PR?
   
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   Adds a parquet-index binary which can be used to dump the page index for a 
given column of a given file. Longer-term I wonder if we should merge some of 
these tools together into a single binary, I may write up a ticket.
   
   # Are there any user-facing changes?
   
   
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