Rich-T-kid commented on code in PR #26159:
URL: https://github.com/apache/datafusion/pull/26159#discussion_r4238419832
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datafusion/common/src/hash_utils.rs:
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@@ -543,23 +555,17 @@ fn hash_dictionary_scatter<
if let Some(key) = key {
let idx = key.as_usize();
if !HAS_NULL_VALUES || dict_values.is_valid(idx) {
- if MULTI_COL {
- *hash = combine_hashes(dict_hashes[idx], *hash);
- } else {
- *hash = dict_hashes[idx];
- }
+ let dict_hash = unsafe { *dict_hashes.get_unchecked(idx) };
Review Comment:
should add a saftey comment
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