ArnavBalyan opened a new pull request, #6178:
URL: https://github.com/apache/paimon/pull/6178
- Add support for multi-column topN with allowing duplicates to topK
filtering in roaring bitmap.
- Idea is to allow duplicates in the primary column to allow the engine to
perform the global sort after collection.
- Since all rows belonging to the top n category are selected, the engine
has enough context to break the tie and perform secondary sort on the other
columns (which is typically much smaller than the whole result set).
- Added UTs
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