Details
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New Feature
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Status: Open
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Major
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Resolution: Unresolved
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7.0.0
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None
Description
Having a version of the aggregation kernel count distinct using HyperLogLog may be useful.
Note: The implementation should support the merge operator.
Some resources/links:
http://algo.inria.fr/flajolet/Publications/FlFuGaMe07.pdf
https://engineering.fb.com/2018/12/13/data-infrastructure/hyperloglog/
https://github.com/facebookincubator/velox/tree/main/velox/aggregates/hyperloglog