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

             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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