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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13204) Vectorization: Add ChainedCheckerFactory for LIKE
Date Thu, 03 Mar 2016 23:10:18 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-13204:
---------------------------
    Attachment: regex-like-cpu.png

> Vectorization: Add ChainedCheckerFactory for LIKE 
> --------------------------------------------------
>
>                 Key: HIVE-13204
>                 URL: https://issues.apache.org/jira/browse/HIVE-13204
>             Project: Hive
>          Issue Type: Improvement
>          Components: Vectorization
>    Affects Versions: 2.1.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>
> Currently, Vectorization runs through a UTF-8 decode to produce a String & then check
for mildly complex patterns like "http://%.exe" using a Regex.
> Since this pattern doesn't need any backtracking patterns, using a full fledged Regex
is too expensive.
> !regex-cpu-like.png!



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