icexelloss commented on code in PR #35364:
URL: https://github.com/apache/arrow/pull/35364#discussion_r1180823651


##########
cpp/src/arrow/engine/substrait/options.cc:
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@@ -205,12 +205,17 @@ class DefaultExtensionProvider : public 
BaseExtensionProvider {
       ARROW_ASSIGN_OR_RAISE(auto aggregate, internal::ParseAggregateMeasure(
                                                 agg_measure, ext_set, 
conv_opts,
                                                 /*is_hash=*/!keys.empty(), 
input_schema));
+      aggregate.name = aggregate.function;

Review Comment:
   @rtpsw I am happy to merge the code that fixes the the segmented aggregation 
bug  (didn't pass the segmented key). and the change that addes validation of 
number of output names However for the internal aggregation names change we 
would need validate that this naming is consistent with other aggregation 
codepath and/or refactor the naming logic to be shared (e.g., move that logic 
into ParseAggregateMeasure), so there is more work. I would suggest revert that 
change for now so we can move forward with the bug fix faster. (Since the 
naming change seems cosmetic)



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