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https://issues.apache.org/jira/browse/HIVE-30163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopinath reassigned HIVE-30163:
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Assignee: Gopinath
> PTF: Vectorize stddev_pop and other variance/stddev functions
> -------------------------------------------------------------
>
> Key: HIVE-30163
> URL: https://issues.apache.org/jira/browse/HIVE-30163
> Project: Hive
> Issue Type: Sub-task
> Reporter: Gopinath
> Assignee: Gopinath
> Priority: Major
>
> Vectorized PTF supports avg, count, cume_dist, dense_rank, first_value, lag,
> last_value, lead, max, min, ntile, percent_rank, rank, row_number and sum,
> but none of variance, var_pop, var_samp, stddev, stddev_pop, stddev_samp. For
> example, a query in vector_windowing.q still runs its reducer in row mode
> with notVectorizedReason: PTF operator: stddev_pop not in supported functions
> [...].
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