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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-20501) Vectorization: Closed range fast-path for Fast Long hashset
Date Wed, 10 Oct 2018 03:50:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-20501?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-20501:
---------------------------
    Resolution: Won't Fix
        Status: Resolved  (was: Patch Available)

> Vectorization: Closed range fast-path for Fast Long hashset 
> ------------------------------------------------------------
>
>                 Key: HIVE-20501
>                 URL: https://issues.apache.org/jira/browse/HIVE-20501
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Gopal V
>            Assignee: Gopal V
>            Priority: Major
>         Attachments: HIVE-20501.1.patch
>
>
> In scenarios where the surrogate keys are entirely contiguous, the cache can offer a
fast-path for [min,max], without a further lookup in the hashtable.
> {code}
> hive> select min(c_customer_sk), max(c_customer_sk), max(c_customer_sk) - min(c_customer_sk),
count(1) from customer;
> 1       65000000        64999999        65000000
> {code}



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