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Posted to issues@hive.apache.org by "VISHNU S NAIR (JIRA)" <ji...@apache.org> on 2016/03/04 10:36:40 UTC

[jira] [Assigned] (HIVE-13204) Vectorization: Add ChainedCheckerFactory for LIKE

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

VISHNU S NAIR reassigned HIVE-13204:
------------------------------------

    Assignee: VISHNU S NAIR  (was: Gopal V)

> 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: VISHNU S NAIR
>         Attachments: regex-cpu-like.png
>
>
> 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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