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How to calculate the unique metrics with HLLSketchMerge #88

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utk14 opened this issue Apr 21, 2020 · 2 comments
Open

How to calculate the unique metrics with HLLSketchMerge #88

utk14 opened this issue Apr 21, 2020 · 2 comments

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@utk14
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utk14 commented Apr 21, 2020

Hi
I was working on the generation of count distinct number for a particular metrics using DQL Aggregators but unable to implement HLLSketchMerge functionality of the druid (https://druid.apache.org/docs/latest/development/extensions-core/datasketches-hll.html) into the scruid. Can someone please help me if there is a way to compute this?
@anskarl
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anskarl commented May 2, 2020

Hi @utk14, the current version of Scruid does not support datasketches.

I think that it would be a nice addition to have datasketches in Scruid.

@anskarl
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anskarl commented May 17, 2020

Until having datasketches support in DQL, you may give a try the SQL API of Scruid v2.4.0 and use for example the APPROX_COUNT_DISTINCT_DS_HLL function

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@anskarl @utk14