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https://issues.apache.org/jira/browse/HIVE-26243?focusedWorklogId=820528&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-820528
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ASF GitHub Bot logged work on HIVE-26243:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Oct/22 14:21
Start Date: 26/Oct/22 14:21
Worklog Time Spent: 10m
Work Description: asolimando commented on PR #3317:
URL: https://github.com/apache/hive/pull/3317#issuecomment-1292129938
Rebased on master in order to take advantage of
PR-[3637](https://github.com/apache/hive/pull/3637) to support KLL sketch size
parameter in the constructor (otherwise we will miss vectorization
opportunities when the UDAF is used in its version specifying the sketch size).
Commits implementing this will come shortly.
Issue Time Tracking
-------------------
Worklog Id: (was: 820528)
Time Spent: 2h 20m (was: 2h 10m)
> Add vectorized implementation of the 'ds_kll_sketch' UDAF
> ---------------------------------------------------------
>
> Key: HIVE-26243
> URL: https://issues.apache.org/jira/browse/HIVE-26243
> Project: Hive
> Issue Type: Improvement
> Components: UDF, Vectorization
> Affects Versions: 4.0.0-alpha-2
> Reporter: Alessandro Solimando
> Assignee: Alessandro Solimando
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> _ds_kll_sketch_ UDAF does not have a vectorized implementation at the moment,
> the present ticket aims at bridging this gap.
> This is particularly important because vectorization has an "all or nothing"
> approach, so if this function is used at the side of vectorized functions,
> they won't be able to benefit from vectorized execution.
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