Jackie-Jiang opened a new pull request, #10454:
URL: https://github.com/apache/pinot/pull/10454

   - When combining server responses, allow responses to have different column 
names, as long as the column data types are the same. This can prevent backward 
incompatibility when column name is changed in the server response
   - For selection queries, remove the extra handling for different column data 
types since we don't allow different data types on the server side when merging 
segment results
   - In `OrderByComparatorFactory`, replace the switch clause with the 
`Comparable` comparison, tried multiple queries locally and didn't observe any 
performance degradation (for high LIMIT, the latency is improved by ~20%)


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