With #137549 we implemented the basic functionality to make exponential_histograms useful in ES|QL.
They do however still have a few language limitations, which are just there because they don't have been implemented yet.
ENRICH support ( there currently is no EnrichResultBuilder)LOOKUP JOIN support ( no lookup() implementation in the block)- multi-value support: The
exponential_histogram field mapper does not support multi-values, but we could allow them to be constructed via VALUE / MV_APPEND
In the context of how exponential_histograms are used these are likely edge cases, still we should eventually support them.
The same applies to the tdigest and partially to the histogram type.
With #137549 we implemented the basic functionality to make
exponential_histogramsuseful in ES|QL.They do however still have a few language limitations, which are just there because they don't have been implemented yet.
ENRICHsupport ( there currently is no EnrichResultBuilder)LOOKUP JOINsupport ( no lookup() implementation in the block)exponential_histogramfield mapper does not support multi-values, but we could allow them to be constructed viaVALUE/MV_APPENDIn the context of how
exponential_histogramsare used these are likely edge cases, still we should eventually support them.The same applies to the
tdigestand partially to thehistogramtype.