MassivePizza commented on PR #10296:
URL: https://github.com/apache/arrow-rs/pull/10296#issuecomment-4971159428

   Sidenote: I also looked at using this caching for DictionaryArrays of 
String, but our product doesn't really generate those. 
   We'd have to add an optimization pass in Datafusion to actually produce 
those for e.g. `CASE WHEN` that evaluate to constant strings.


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