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Posted to github@arrow.apache.org by "pitrou (via GitHub)" <gi...@apache.org> on 2026/06/11 16:33:57 UTC

Re: [I] [C++] Arrow ipc format supports deduplication of dictionaries with dict_id, but there is no way to exercise it [arrow]

pitrou commented on issue #49646:
URL: https://github.com/apache/arrow/issues/49646#issuecomment-4682767524

   Sorry for the lack of earlier response. Did you encounter a use case where this would bring significant benefits?
   
   Intuitively, in most cases the space savings won't be large, but deduplicating dictionaries will be costly in the write side.


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