pitrou opened a new issue, #46994: URL: https://github.com/apache/arrow/issues/46994
### Describe the enhancement requested At least for dictionary encoding, it should be trivial to reuse the same view for all occurrences of a given dictionary value. For DELTA_BYTE_ARRAY, this should also be possible if the prefix length is the full length of the previous value, and the suffix length is 0 (this is an efficient way of detecting repeated values). For other encodings, it would probably be too expensive, though, as full length string comparisons would be required. ### Component(s) C++, Parquet -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org