Dodothereal opened a new pull request, #23152:
URL: https://github.com/apache/datafusion/pull/23152

   Fixes #23080 (partial)
   
   ## Summary
   
   Removes `datafusion_catalog_listing::helpers::split_files`, deprecated since 
47.0.0 in favor of the `FileGroup::split_files` method on 
`datafusion-catalog/datasource::file_groups::FileGroup`.
   
   Verified workspace-wide:
   - 0 non-test call sites for the deprecated free function (`grep -rn 
"split_files" --include="*.rs"`)
   - The 5 in-tree references in 
`datafusion/catalog-listing/src/helpers.rs::tests::test_split_files` are calls 
on `FileGroup` values (`files.clone().split_files(N)`), not the deprecated free 
function — they exercise `FileGroup::split_files` correctly.
   - 3 other call sites in `datafusion/catalog-listing/src/table.rs` also call 
the `FileGroup` method.
   - `cargo check -p datafusion-catalog-listing` is clean (no warnings after 
also dropping the now-unused `use std::mem;`).
   - `cargo test -p datafusion-catalog-listing test_split_files` passes.
   
   This is a 36-line pure deletion: 35 lines for the function body plus the 
`use std::mem;` import. Replaces only — the public method 
`FileGroup::split_files` already exists at 
`datafusion/datasource/src/file_groups.rs:454` and is what callers use.
   
   ## Test plan
   
   - `cargo check -p datafusion-catalog-listing` ✓ (clean)
   - `cargo test -p datafusion-catalog-listing test_split_files` ✓ 1 passed
   - `grep -rn "helpers::split_files\|use.*helpers::{.*split_files" 
datafusion/` → 0 matches after this change
   
   `(e of in-tree call sites verified before edit via workspace grep; revisited 
after edit.)`
   
   ## AI assistance
   
   This patch was drafted with the help of an AI coding assistant. The diff was 
reviewed line by line before submission and the change was verified 
independently (cargo check + a focused cargo test run).
   
   Signed-off-by: Dodothereal <[email protected]>
   


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