yashmayya opened a new pull request, #18169:
URL: https://github.com/apache/pinot/pull/18169
- Resolve TODO in `WindowValueAggregatorFactory` by adding type-specific
window value aggregator implementations
- Add `SumLongWindowValueAggregator` for `INT`/`LONG` to avoid precision
loss when summing large long values (> 2^53)
- Add `SumBigDecimalWindowValueAggregator` for `BIG_DECIMAL` to preserve
full decimal precision
- Add primitive `MinIntWindowValueAggregator` /
`MaxIntWindowValueAggregator` using fastutil `IntArrayFIFOQueue`
- Add primitive `MinLongWindowValueAggregator` /
`MaxLongWindowValueAggregator` using fastutil `LongArrayFIFOQueue`
- Add `MinComparableWindowValueAggregator` /
`MaxComparableWindowValueAggregator` as fallback for types like `BIG_DECIMAL`
- Factory now dispatches based on `columnDataType.getStoredType()` instead
of always using double-based aggregators
- Add 56 unit tests covering factory dispatch, all new aggregators, null
handling, removal support, and precision preservation
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