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Posted to dev@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2016/03/04 00:10:18 UTC

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

Gopal V created HIVE-13204:
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             Summary: 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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