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Posted to github@arrow.apache.org by "etseidl (via GitHub)" <gi...@apache.org> on 2025/10/09 23:03:03 UTC

Re: [I] ParquetMetaData memory size is not reported accurately when `encryption` is enabled [arrow-rs]

etseidl commented on issue #8472:
URL: https://github.com/apache/arrow-rs/issues/8472#issuecomment-3387734756

   So I've tried running down this rabbit hole, and hit two roadblocks. One is https://github.com/apache/arrow-rs/blob/209eafa75ad94ad8b6eda953153c590bd9b9a8a5/parquet/src/encryption/ciphers.rs#L37-L39
   I have no idea how to handle the `LessSafeKey`.
   
   Similarly https://github.com/apache/arrow-rs/blob/209eafa75ad94ad8b6eda953153c590bd9b9a8a5/parquet/src/encryption/decrypt.rs#L275-L278
   How to get the size of something a user might pass in. `HeapSize` is private, so we can't add it to the bounds on `KeyRetriever`, and it seems weird to add `heap_size` to the trait.
   
   @rok or @adamreeve any ideas?


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