[jira] [Updated] (IMPALA-10105) Implement KLL functions that return array of doubles

["Gabor Kaszab (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-10105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Kaszab updated IMPALA-10105:
----------------------------------
    Summary: Implement KLL functions that return array of doubles  (was: Rewrite KLL functions to return array of doubles)

> Implement KLL functions that return array of doubles
> ----------------------------------------------------
>
>                 Key: IMPALA-10105
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10105
>             Project: IMPALA
>          Issue Type: New Feature
>          Components: Backend
>            Reporter: Gabor Kaszab
>            Priority: Major
>
> There are functions that originally meant to return Array<Double> but since Impala doesn't have support for returning complex types these functions were implemented to return a comma separated string.
> To avoid breaking compatibility these functions got "_as_string" postfix:
> - ds_kll_quantiles_as_string()
> - ds_kll_pmf_as_string()
> - ds_kll_cdf_as_string()
> This ticket is to implement the version of these functions that actually return an array of doubles.
> - ds_kll_quantiles()
> - ds_kll_pmf()
> - ds_kll_cdf()
> This is the Jira that track complex types support as return type:
> https://issues.apache.org/jira/browse/IMPALA-9520



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