Add queryDSL histogram aggregation for exponential_histogram fields #136888
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elasticsearchmachine
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felixbarny
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Oct 22, 2025
| if (values.advanceExact(doc)) { | ||
| ExponentialHistogram histo = values.histogramValue(); | ||
| forEachBucketCenter(histo, (center, count) -> { | ||
| double clampedCenter = Math.clamp(center, histo.min(), histo.max()); |
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Maybe clamp in forEachBucketCenter?
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Part of #135625. Adds support for the histogram aggregation on exponential_histogram fields.
The implementation uses the same assumption as the percentiles and rank algorithms: For each histogram bucket, all values lie on a single point. (see #136354).
The implementation was mostly copied from the existing T-Digest implementation.