Jackie-Jiang opened a new pull request, #14664:
URL: https://github.com/apache/pinot/pull/14664
Introduce `is_enable_group_trim` as an agg option to enable group trim in
the leaf stage.
Group trim can be enabled when there is order by and limit.
E.g.
```
SELECT /*+ aggOptions(is_partitioned_by_group_by_keys='true',
is_enable_group_trim='true') */ {tbl1}.num, COUNT(*), SUM({tbl1}.val),
SUM({tbl1}.num), COUNT(DISTINCT {tbl1}.val) FROM {tbl1} WHERE {tbl1}.val >= 0
AND {tbl1}.name != 'a' GROUP BY {tbl1}.num ORDER BY COUNT(*) DESC LIMIT 1
```
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