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https://issues.apache.org/jira/browse/IMPALA-10018?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-10018 started by Gabor Kaszab.
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> Implement ds_kll_rank() function
> --------------------------------
>
> Key: IMPALA-10018
> URL: https://issues.apache.org/jira/browse/IMPALA-10018
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Gabor Kaszab
> Assignee: Gabor Kaszab
> Priority: Major
>
> ds_kll_rank() receives two parameters: a STRING that represents a serialized
> DataSketches KLL sketch and a float to provide a probing value in the sketch.
> Returns a DOUBLE that is the rank of the given probing value in the range of
> [0,1]. E.g. a return value of 0.2 means that the probing value given as
> parameter is greater than the 20% of all the values in the sketch. Note, this
> is an approximate calculation.
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