[GitHub] [arrow] westonpace commented on issue #35841: [C++] get_fragments filter argument not filtering on statistics

["westonpace (via GitHub)" <gi...@apache.org>]

westonpace commented on issue #35841:
URL: https://github.com/apache/arrow/issues/35841#issuecomment-1583432371

   I've labeled this C++ since the eventual fix will probably need to be there.  You are correct that row group filtering is not currently happening in `get_fragments`.  It may not be the simplest thing to fix.  I suspect that comment is from the legacy parquet dataset which may have operated in this fashion.
   
   Unfortunately, we do not load the parquet metadata for every single fragment when a dataset is created.  In fact, if you specify a list of files and a schema at dataset creation, we won't load any data at all from disk.  So we don't have the statistics at this point.


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