leventov opened a new pull request #6400: Optimize data structures in SelectResultValueBuilder URL: https://github.com/apache/incubator-druid/pull/6400 `MinMaxPriorityQueue` is never needed. Also, when there is no threshold of the number of results, it's practically faster better to aggregate results in an `ArrayList` from the beginning and then sort in the end, than aggregate in a priority queue (because quick sort is considered faster than heap sort). Also, I don't understand the meaning of `pagingIdentifiers` - it's not explained anywhere. Is it important for this Map to put entries in order?
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