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Antalya 26.6: add UniqApacheHLL
- #2398
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UnamedRus
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Antalya 26.6: add UniqApacheHLL
#2398
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Commits on Sep 17, 2026
Update contrib/datasketches-cpp to 5.2.0 and backport the HLL union fix
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Add uniqApacheHLL: Apache DataSketches HLL as a native aggregate function
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Commits on Sep 28, 2026
Merge branch 'antalya-26.6' into feature/antalya-26.6/uniq-apache-hll
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Simplify `uniqApacheHLL` implementation and tests
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Fix `uniqApacheHLL` merge resolution below 7 and empty state serialization
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Merge branch 'antalya-26.6' into feature/antalya-26.6/uniq-apache-hll
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Fix `uniqApacheHLL` on an all-NULL argument and merge its tests
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Commits on Oct 2, 2026
ci: run aggregate functions regression
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Commits on Oct 5, 2026
Defer folding in `uniqApacheHLL` and add missing includes
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Make `uniqApacheHLL` reject non-integer `lg_k` and skip merging empty states
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Remove stray blank line in `AggregateFunctionUniqApacheHLL`
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Use `FieldVisitorConvertToNumber` for the `uniqApacheHLL` parameter `lg_k`
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Include `config.h` explicitly where `USE_DATASKETCHES` is used for registration
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Update `contrib/datasketches-cpp` to include the compact theta preamble bounds check
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Merge branch 'antalya-26.6' into feature/antalya-26.6/uniq-apache-hll
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Merge `rhs` sketches before folding the pending one in `uniqApacheHLL`
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Add a test pinning how `uniqApacheHLL` hashes every argument type on border values
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Ignore empty strings in `uniqApacheHLL` and pin its `NULL` handling
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Keep the `uniqApacheHLL` state of a `Nullable` argument a bare DataSketches sketch
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Give the `uniqApacheHLL` state of a `Nullable` argument the type of the plain state
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Let a function opt out of the flag and type of the `Null` and `If` wrappers
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Merge branch 'feature/antalya-26.6/uniq-apache-hll' of github.com:Altinity/ClickHouse into review-pr2398
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Fix the expected output of two new `uniqApacheHLL` tests after the first CI run
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DCO remediation commit for UnamedRus <dtitmoav@gmail.com>
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Stop converting `uniqApacheHLL` unions to the declared type to read or merge them
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Drop the speculative ordering comment in `uniqApacheHLL` merge
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