andygrove opened a new issue, #48:
URL: https://github.com/apache/datafusion-spark/issues/48

   This repo starts from the point where DataFusion `branch-56` was cut. Two 
PRs landed on `main` after that:
   
   - apache/datafusion#27049: short Apache header migration (already included 
here, no functional effect)
   - apache/datafusion#26703: \"perf: stop dictionary work growing with the 
group count\"
   
   #26703 changed `crates/spark/src/function/math/hex.rs` to use 
`datafusion_common::utils::map_dictionary_values`, which does not exist on 
`branch-56`. It was reverted in #45 so the crate builds against `branch-56`.
   
   Follow-up:
   - [ ] Once the DataFusion 56 crates are released, switch the git 
dependencies in `Cargo.toml` to the released crates.
   - [ ] Re-apply the `hex.rs` change from #26703 once the crate depends on a 
DataFusion release (57+) that includes `map_dictionary_values`.
   - [ ] Check for any other spark changes that landed on DataFusion `main` 
after the branch-56 cut.


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